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README.md

Awesome Scala Awesome

A community driven list of useful Scala libraries, frameworks and software. This is not a catalog of all the libraries, just a starting point for your explorations. Inspired by awesome-python. Other amazingly awesome lists can be found in the awesome-awesomeness list.

Also awesome is Scaladex, the searchable, tagged, and centralized index of Scala libraries.

Projects with over 500 stargazers are in bold.

Contributing

Your contributions are always welcome! Please submit a pull request or create an issue to add a new framework, library or software to the list. Do not submit a project that hasn’t been updated in the past 6 months or is not awesome.

Don't modify README.md in your pull request. It is automatically generated. Modify template.md instead.

Table of Contents

Artificial Intelligence

Name Description GitHub Activity
cilib Typesafe, purely functional Computational Intelligence GitHub stars GitHub commit activity
cilib-tutorial Community driven tutorial for CIlib GitHub stars GitHub commit activity

Database

Database access libraries in Scala.

Name Description GitHub Activity
akka-persistence-gcp-datastore akka-persistence-gcp-datastore is a journal and snapshot store plugin for akka-persistence using google cloud firestore in datastore mode. GitHub stars GitHub commit activity
anorm The Anorm database library GitHub stars GitHub commit activity
casbah Casbah is now officially end-of-life (EOL). GitHub stars GitHub commit activity
clickhouse-scala-client Clickhouse Scala Client with Reactive Streams support GitHub stars GitHub commit activity
couchbase-jvm-clients The Couchbase Monorepo for JVM Clients: Java, Scala, io-core… GitHub stars GitHub commit activity
couchdb-scala A purely functional Scala client for CouchDB GitHub stars GitHub commit activity
d4s Dynamo DB Database Done Scala-way GitHub stars GitHub commit activity
doobie Functional JDBC layer for Scala. GitHub stars GitHub commit activity
elastic4s Elasticsearch Scala Client - Reactive, Non Blocking, Type Safe, HTTP Client GitHub stars GitHub commit activity
etcd4s Scala etcd client implementing V3 APIs GitHub stars GitHub commit activity
finagle-postgres PostgreSQL protocol support for Finagle GitHub stars GitHub commit activity
laserdisc A Future-free Fs2 native pure FP Redis client GitHub stars GitHub commit activity
mysql-binlog-stream None GitHub stars GitHub commit activity
longevity A Persistence Framework for Scala and NoSQL GitHub stars GitHub commit activity
lucene4s Light-weight convenience wrapper around Lucene to simplify complex tasks and add Scala sugar. GitHub stars GitHub commit activity
mapperdao A Scala ORM library GitHub stars GitHub commit activity
memcontinuationed Memcached client for Scala GitHub stars GitHub commit activity
morpheus Reactive type-safe Scala driver for SQL databases GitHub stars GitHub commit activity
neo4akka Neo4j Scala client using Akka-Http GitHub stars GitHub commit activity
neotypes Scala lightweight, type-safe, asynchronous driver for neo4j GitHub stars GitHub commit activity
phantom Schema safe, type-safe, reactive Scala driver for Cassandra/Datastax Enterprise GitHub stars GitHub commit activity
pulsar4s Idiomatic, typesafe, and reactive Scala client for Apache Pulsar GitHub stars GitHub commit activity
quill Compile-time Language Integrated Queries for Scala GitHub stars GitHub commit activity
reactivecouchbase-rs-core New ReactiveCouchbase driver using reactive-streams GitHub stars GitHub commit activity
ReactiveMongo 🍃 Non-blocking, Reactive MongoDB Driver for Scala GitHub stars GitHub commit activity
rediscala Non-blocking, Reactive Redis driver for Scala (with Sentinel support) GitHub stars GitHub commit activity
relate Performant database access in Scala GitHub stars GitHub commit activity
salat Salat is a simple serialization library for case classes. GitHub stars GitHub commit activity
sangria Scala GraphQL implementation GitHub stars GitHub commit activity
scala-activerecord ActiveRecord-like ORM library for Scala GitHub stars GitHub commit activity
scala-forklift Type-safe data migration tool for Slick, Git and beyond. GitHub stars GitHub commit activity
scala-redis A scala library for connecting to a redis server, or a cluster of redis nodes using consistent hashing on the client side. GitHub stars GitHub commit activity
scala-sql scala SQL api GitHub stars GitHub commit activity
scalarelational Type-Safe framework for defining, modifying, and querying SQL databases GitHub stars GitHub commit activity
scalikejdbc A tidy SQL-based DB access library for Scala developers. This library naturally wraps JDBC APIs and provides you easy-to-use APIs. GitHub stars GitHub commit activity
scanamo Simpler DynamoDB access for Scala GitHub stars GitHub commit activity
scredis Non-blocking, ultra-fast Scala Redis client built on top of Akka IO, used in production at Livestream GitHub stars GitHub commit activity
scruid Scala + Druid: Scruid. A library that allows you to compose queries in Scala, and parse the result back into typesafe classes. GitHub stars GitHub commit activity
shade Memcached client for Scala GitHub stars GitHub commit activity
slick Scala Language Integrated Connection Kit GitHub stars GitHub commit activity
slick-pg Slick extensions for PostgreSQL GitHub stars GitHub commit activity
sorm A functional boilerplate-free Scala ORM GitHub stars GitHub commit activity
squeryl A Scala DSL for talking with databases with minimum verbosity and maximum type safety GitHub stars GitHub commit activity
molecule Scala meta-DSL for the Datomic database GitHub stars GitHub commit activity

Messaging

Name Description GitHub Activity
op-rabbit The Opinionated RabbitMQ Library for Scala and Akka GitHub stars GitHub commit activity

Graphical User Interfaces

Libraries for creation of graphical user interfaces

Name Description GitHub Activity
scalafx ScalaFX simplifies creation of JavaFX-based user interfaces in Scala. GitHub stars GitHub commit activity

Web Frameworks

Scala frameworks for web development.

Name Description GitHub Activity
analogweb-scala Tiny High Performance HTTP Server for Scala GitHub stars GitHub commit activity
chaos A lightweight framework for writing REST services in Scala. GitHub stars GitHub commit activity
colossus I/O and Microservice library for Scala GitHub stars GitHub commit activity
finatra Fast, testable, Scala services built on TwitterServer and Finagle GitHub stars GitHub commit activity
framework Lift Framework GitHub stars GitHub commit activity
peregrine Async lightweight Scala web framework GitHub stars GitHub commit activity
playframework Play Framework GitHub stars GitHub commit activity
pagelets A module for the Play Framework to build highly modular applications GitHub stars GitHub commit activity
reactive A simple FRP library and a web UI framework built on it GitHub stars GitHub commit activity
scalajs-react Facebook's React on Scala.JS GitHub stars GitHub commit activity
scalatra Tiny Scala high-performance, async web framework, inspired by Sinatra GitHub stars GitHub commit activity
skinny-framework 🚝 "Scala on Rails" - A full-stack web app framework for rapid development in Scala GitHub stars GitHub commit activity
suzaku Suzaku web UI framework for Scala GitHub stars GitHub commit activity
unfiltered A toolkit for servicing HTTP requests in Scala GitHub stars GitHub commit activity
xitrum Async and clustered Scala web framework and HTTP(S) server GitHub stars GitHub commit activity
youi Next generation user interface and application development in Scala and Scala.js for web, mobile, and desktop. GitHub stars GitHub commit activity

Reactive Web Frameworks

Scala libraries for Reactive Web development

Name Description GitHub Activity
Binding.scala Reactive data-binding for Scala GitHub stars GitHub commit activity
korolev Single Page Applications running on the server side. GitHub stars GitHub commit activity
udash-core Scala framework for building beautiful and maintainable web applications. GitHub stars GitHub commit activity
vertx-lang-scala Vert.x for Scala GitHub stars GitHub commit activity
widok Reactive web framework for the JVM and Scala.js GitHub stars GitHub commit activity

Data Binding and Validation

Scala libraries for data binding and validation

Name Description GitHub Activity
accord Accord: A sane validation library for Scala GitHub stars GitHub commit activity
dupin Minimal, idiomatic, customizable validation for Scala. GitHub stars GitHub commit activity
form-binder A micro data binding and validating framework, very easy to use and hack GitHub stars GitHub commit activity
octopus Scala library for boilerplate-free validation GitHub stars GitHub commit activity
veto If you don't agree with the data GitHub stars GitHub commit activity

i18n

Scala libraries for i18n.

Name Description GitHub Activity
scala-xgettext Scala compiler plugin that acts like GNU xgettext command to extract i18n strings in Scala source code files to Gettext .po file GitHub stars GitHub commit activity
scaposer GNU Gettext .po file loader for Scala GitHub stars GitHub commit activity

Authentication

Libraries for implementing authentications schemes.

Name Description GitHub Activity
akka-http-session Web & mobile client-side akka-http sessions, with optional JWT support GitHub stars GitHub commit activity
aws-request-signer Scala library to sign HTTP requests to AWS services. GitHub stars GitHub commit activity
OAuth2-mock-play An implementation of an OAuth2 server designed for mocking/testing GitHub stars GitHub commit activity
play-googleauth Simple play module for authenticating against Google GitHub stars GitHub commit activity
play-pac4j Security library for Play framework 2 in Java and Scala: OAuth, CAS, SAML, OpenID Connect, LDAP, JWT... GitHub stars GitHub commit activity
play-silhouette Silhouette is an authentication library for Play Framework applications that supports several authentication methods, including OAuth1, OAuth2, OpenID, CAS, 2FA, TOTP, Credentials, Basic Authentication or custom authentication schemes. GitHub stars GitHub commit activity
play2-auth Play2.x Authentication and Authorization module GitHub stars GitHub commit activity
scala-oauth2-provider OAuth 2.0 server-side implementation written in Scala GitHub stars GitHub commit activity
securesocial A module that provides OAuth, OAuth2 and OpenID authentication for Play Framework applications GitHub stars GitHub commit activity

Authorization

Libraries for implementing authorization strategies.

Name Description GitHub Activity
deadbolt-2 An authorization module for the Play framework GitHub stars GitHub commit activity

Cryptography

Cryptography and Encryption Libraries.

Name Description GitHub Activity
scrypto Cryptographic primitives for Scala GitHub stars GitHub commit activity
tsec Type-safe general-cryptography library - https://jmcardon.github.io/tsec/ GitHub stars GitHub commit activity

Testing

Libraries for code testing.

Name Description GitHub Activity
cornichon Scala DSL for testing HTTP JSON API GitHub stars GitHub commit activity
gatling Modern Load Testing as Code GitHub stars GitHub commit activity
minitest The super light testing library for Scala and Scala.js GitHub stars GitHub commit activity
mockito-scala Mockito for Scala language GitHub stars GitHub commit activity
scalacheck Property-based testing for Scala GitHub stars GitHub commit activity
scalameter Microbenchmarking and performance regression testing framework for the JVM platform. GitHub stars GitHub commit activity
ScalaMock Native Scala mocking framework GitHub stars GitHub commit activity
scalaprops property based testing library for Scala GitHub stars GitHub commit activity
scalatest A testing tool for Scala and Java developers GitHub stars GitHub commit activity
scalive Connect a Scala REPL to running JVM processes without any prior setup GitHub stars GitHub commit activity
specs2 Software Specifications for Scala GitHub stars GitHub commit activity
stryker4s Mutation testing for Scala. Work in progress... GitHub stars GitHub commit activity
testcontainers-scala Docker containers for testing in scala GitHub stars GitHub commit activity
utest A simple testing framework for Scala GitHub stars GitHub commit activity

JSON

Libraries for work with json.

Name Description GitHub Activity
argonaut Purely functional JSON parser and library in scala. GitHub stars GitHub commit activity
circe Yet another JSON library for Scala GitHub stars GitHub commit activity
diffson A scala diff/patch library for Json GitHub stars GitHub commit activity
jackson-module-scala Add-on module for Jackson (https://github.com/FasterXML/jackson) to support Scala-specific datatypes GitHub stars GitHub commit activity
jawn Jawn is for parsing jay-sawn (JSON) GitHub stars GitHub commit activity
json4s A single AST to be used by other scala json libraries GitHub stars GitHub commit activity
jsoniter-scala Scala macros for compile-time generation of safe and ultra-fast JSON codecs GitHub stars GitHub commit activity
json Persist-Json, a Fast Json Parser Written in Scala GitHub stars GitHub commit activity
ninny-json JSON typeclasses that know the difference between null and absent fields GitHub stars GitHub commit activity
play-json The Play JSON library GitHub stars GitHub commit activity
pushka ABANDONED Pure Scala serialization library with annotations GitHub stars GitHub commit activity
qbproject Source Code for qb GitHub stars GitHub commit activity
sbt-json sbt plugin that generates Scala case classes for easy, statically typed and implicit access of JSON data e.g. from API responses GitHub stars GitHub commit activity
scala-jsonapi Scala support library for integrating the JSON API spec with Spray, Play! or Circe GitHub stars GitHub commit activity
ScalaJack Fast JSON parser/generator for Scala GitHub stars GitHub commit activity
spray-json A lightweight, clean and simple JSON implementation in Scala GitHub stars GitHub commit activity

YAML

Libraries for work with YAML.

Name Description GitHub Activity
moultingyaml Scala wrapper for SnakeYAML GitHub stars GitHub commit activity

CSV

Libraries for work with CSV.

Name Description GitHub Activity
fm-flatfile Scala Library for Reading Flat File Data (CSV/TSV/XLS/XLSX) GitHub stars GitHub commit activity
kantan.csv CSV handling library for Scala GitHub stars GitHub commit activity
scala-csv CSV Reader/Writer for Scala GitHub stars GitHub commit activity

Serialization

Libraries for serializing and deserializing data for storage or transport.

Name Description GitHub Activity
avro-codegen Scala code generator for Avro schemas. GitHub stars GitHub commit activity
avro4s Avro schema generation and serialization / deserialization for Scala GitHub stars GitHub commit activity
chill Scala extensions for the Kryo serialization library GitHub stars GitHub commit activity
msgpack-scala MessagePack serializer implementation for Scala / msgpack.org[Scala] GitHub stars GitHub commit activity
ScalaBuff the scala protocol buffers (protobuf) compiler GitHub stars GitHub commit activity
ScalaPB Protocol buffer compiler for Scala. GitHub stars GitHub commit activity
scodec Scala combinator library for working with binary data GitHub stars GitHub commit activity
scrooge A Thrift parser/generator GitHub stars GitHub commit activity
upickle uPickle: a simple, fast, dependency-free JSON & Binary (MessagePack) serialization library for Scala GitHub stars GitHub commit activity

Science and Data Analysis

Libraries for scientific computing, data analysis and numerical processing.

Name Description GitHub Activity
algebird Abstract Algebra for Scala GitHub stars GitHub commit activity
axle Axle Domain Specific Language for Scientific Cloud Computing and Visualization GitHub stars GitHub commit activity
BigDL BigDL: Distributed Deep Learning Framework for Apache Spark GitHub stars GitHub commit activity
breeze Breeze is a numerical processing library for Scala. GitHub stars GitHub commit activity
Clustering4Ever C4E, a JVM friendly library written in Scala for both local and distributed (Spark) Clustering. GitHub stars GitHub commit activity
doddle-model 🍰 doddle-model: machine learning in Scala. GitHub stars GitHub commit activity
factorie FACTORIE is a toolkit for deployable probabilistic modeling, implemented as a software library in Scala. It provides its users with a succinct language for creating relational factor graphs, estimating parameters and performing inference. GitHub stars GitHub commit activity
figaro Figaro Programming Language and Core Libraries GitHub stars GitHub commit activity
libra A dimensional analysis library based on dependent types GitHub stars GitHub commit activity
LoMRF LoMRF is an open-source implementation of Markov Logic Networks GitHub stars GitHub commit activity
mgo Purely functional genetic algorithms for multi-objective optimisation GitHub stars GitHub commit activity
MLLib Machine Learning framework for Spark
nd4s ND4S: N-Dimensional Arrays for Scala. Scientific Computing a la Numpy. Based on ND4J. GitHub stars GitHub commit activity
numsca numsca is numpy for scala GitHub stars GitHub commit activity
openmole Workflow engine for exploration of simulation models using high throughput computing GitHub stars GitHub commit activity
Optimus Optimus is a mathematical programming library for Scala. GitHub stars GitHub commit activity
OscaR a Scala toolkit for solving Operations Research problems
units Scala Units of Measure Types GitHub stars GitHub commit activity
predictionio PredictionIO, a machine learning server for developers and ML engineers. GitHub stars GitHub commit activity
rings Rings: efficient JVM library for polynomial rings GitHub stars GitHub commit activity
smile Statistical Machine Intelligence & Learning Engine GitHub stars GitHub commit activity
spark-notebook Interactive and Reactive Data Science using Scala and Spark. GitHub stars GitHub commit activity
spire Powerful new number types and numeric abstractions for Scala. GitHub stars GitHub commit activity
squants The Scala API for Quantities, Units of Measure and Dimensional Analysis GitHub stars GitHub commit activity
swiftlearner SwiftLearner: Scala machine learning library GitHub stars GitHub commit activity
Synapses A lightweight library for neural networks that runs anywhere GitHub stars GitHub commit activity
tensorflow_scala TensorFlow API for the Scala Programming Language GitHub stars GitHub commit activity
tyche Statistics utilities for the JVM - in Scala! GitHub stars GitHub commit activity
zeppelin Web-based notebook that enables data-driven, interactive data analytics and collaborative documents with SQL, Scala and more. GitHub stars GitHub commit activity

Big Data

Name Description GitHub Activity
BIDMach CPU and GPU-accelerated Machine Learning Library GitHub stars GitHub commit activity
flink Apache Flink GitHub stars GitHub commit activity
incubator-retired-gearpump Mirror of Apache Gearpump (Incubating) GitHub stars GitHub commit activity
gridscale Scala library for accessing various file, batch systems, job schedulers and grid middlewares. GitHub stars GitHub commit activity
kafka Mirror of Apache Kafka GitHub stars GitHub commit activity
alpakka-kafka Alpakka Kafka connector - Alpakka is a Reactive Enterprise Integration library for Java and Scala, based on Reactive Streams and Akka. GitHub stars GitHub commit activity
scalding A Scala API for Cascading GitHub stars GitHub commit activity
schemer Schema registry for CSV, TSV, JSON, AVRO and Parquet schema. Supports schema inference and GraphQL API. GitHub stars GitHub commit activity
scio A Scala API for Apache Beam and Google Cloud Dataflow. GitHub stars GitHub commit activity
Scrunch A Scala wrapper for Apache Crunch which provides a framework for writing, testing, and running MapReduce pipelines.
spark Apache Spark - A unified analytics engine for large-scale data processing GitHub stars GitHub commit activity
spark-deployer Deploy Spark cluster in an easy way. GitHub stars GitHub commit activity
sparkplug Spark package to "plug" holes in data using SQL based rules ⚡️ 🔌 GitHub stars GitHub commit activity
sparta Real Time Analytics and Data Pipelines based on Spark Streaming GitHub stars GitHub commit activity
summingbird Streaming MapReduce with Scalding and Storm GitHub stars GitHub commit activity
Vegas The missing MatPlotLib for Scala + Spark GitHub stars GitHub commit activity

Command Line Interfaces

Libraries for creation of command line interfaces

Name Description GitHub Activity
clist Command Line Interface Scala Toolkit GitHub stars GitHub commit activity
decline A composable command-line parser for Scala. GitHub stars GitHub commit activity
scallop a simple Scala CLI parsing library GitHub stars GitHub commit activity
scopt command line options parsing for Scala GitHub stars GitHub commit activity

Image processing and image analysis

2D and 3D image processing and image analysis

Name Description GitHub Activity
scala-phash Image comparison by hash codes GitHub stars GitHub commit activity
scalismo Scalable Image Analysis and Shape Modelling GitHub stars GitHub commit activity
scrimage Java, Scala and Kotlin image processing library GitHub stars GitHub commit activity

Sound processing and music

Name Description GitHub Activity
Chromaprint.scala Chromaprint/AcoustID audio fingerprinting for the JVM GitHub stars GitHub commit activity
ScalaCollider A Scala sound synthesis library based on SuperCollider. Mirror of https://git.iem.at/sciss/ScalaCollider GitHub stars GitHub commit activity

Functional Reactive Programming

Event streams, signals, observables, etc.

Name Description GitHub Activity
fs2 Compositional, streaming I/O library for Scala GitHub stars GitHub commit activity
iteratee Iteratees for cats GitHub stars GitHub commit activity
monix Asynchronous, Reactive Programming for Scala and Scala.js. GitHub stars GitHub commit activity
reactors A concurrent reactive programming framework. GitHub stars GitHub commit activity
reactor-scala-extensions A scala extension for Project Reactor's Flux and Mono GitHub stars GitHub commit activity
REScala REScala - reactive programming in OO applications GitHub stars GitHub commit activity
RxScala RxScala – Reactive Extensions for Scala – a library for composing asynchronous and event-based programs using observable sequences GitHub stars GitHub commit activity
scala.frp Functional Reactive Programming for Scala GitHub stars GitHub commit activity
scala.rx An experimental library for Functional Reactive Programming in Scala GitHub stars GitHub commit activity
zio ZIO — A type-safe, composable library for async and concurrent programming in Scala GitHub stars GitHub commit activity
SynapseGrid SynapseGrid is a framework for constructing dynamic low latency data flow systems. GitHub stars GitHub commit activity
vertx-lang-scala Vert.x for Scala GitHub stars GitHub commit activity

Modularization and Dependency Injection

Modularization of applications, dependency injection, etc.

Name Description GitHub Activity
airframe Essential Building Blocks for Scala GitHub stars GitHub commit activity
cableguy Yet another Scala Dependency Injection Library GitHub stars GitHub commit activity
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain GitHub stars GitHub commit activity
macwire Lightweight and Nonintrusive Scala Dependency Injection Library GitHub stars GitHub commit activity
scala-guice Scala extensions for Google Guice GitHub stars GitHub commit activity
scaldi Lightweight Scala Dependency Injection Library GitHub stars GitHub commit activity
sclasner Scala classpath scanner GitHub stars GitHub commit activity
subcut Scala Uniquely Bound Classes Under Traits GitHub stars GitHub commit activity

Distributed Systems

Libraries and frameworks for writing distributed applications.

Name Description GitHub Activity
akka Build highly concurrent, distributed, and resilient message-driven applications on the JVM GitHub stars GitHub commit activity
akka-tracing A distributed tracing extension for Akka. Provides integration with Play framework, Spray and Akka HTTP. GitHub stars GitHub commit activity
annette Platform to build distributed, scalable, enterprise-wide business applications GitHub stars GitHub commit activity
autobreaker Automatically wrap Scala classes that return Futures with a Circuit Breaker GitHub stars GitHub commit activity
clump A library for expressive and efficient service composition GitHub stars GitHub commit activity
curiodb Distributed NoSQL Database GitHub stars GitHub commit activity
finagle A fault tolerant, protocol-agnostic RPC system GitHub stars GitHub commit activity
glokka Library to register and lookup actors by names in an Akka cluster GitHub stars GitHub commit activity
lagom Reactive Microservices for the JVM GitHub stars GitHub commit activity
parapet A purely functional library to build distributed and event-driven systems GitHub stars GitHub commit activity
poppet Minimal, extensible, type safe Scala library for generating RPC services from pure service traits. GitHub stars GitHub commit activity
reactors A foundational framework for distributed programming. GitHub stars GitHub commit activity

Extensions

Scala extensions.

Name Description GitHub Activity
Ammonite Scala Scripting GitHub stars GitHub commit activity
better-files Simple, safe and intuitive Scala I/O GitHub stars GitHub commit activity
blindsight Blindsight is a Scala logging API with DSL based structured logging, fluent logging, semantic logging, flow logging, and context aware logging. GitHub stars GitHub commit activity
cassovary Cassovary is a simple big graph processing library for the JVM GitHub stars GitHub commit activity
cats Lightweight, modular, and extensible library for functional programming. GitHub stars GitHub commit activity
chimney Scala library for boilerplate-free, type-safe data transformations GitHub stars GitHub commit activity
chronoscala A JSR-310 port of nscala_time GitHub stars GitHub commit activity
Dsl.scala A framework to create embedded Domain-Specific Languages in Scala GitHub stars GitHub commit activity
each A macro library that converts native imperative syntax to scalaz's monadic expressions GitHub stars GitHub commit activity
eff Eff monad for cats - https://atnos-org.github.io/eff GitHub stars GitHub commit activity
enableIf.scala A library that toggles Scala code at compile-time, like #if in C/C++ GitHub stars GitHub commit activity
enumeratum A type-safe, reflection-free, powerful enumeration implementation for Scala with exhaustive pattern match warnings and helpful integrations. GitHub stars GitHub commit activity
Freasy-Monad Easy way to create Free Monad using Scala macros with first-class Intellij support. GitHub stars GitHub commit activity
freedsl Practical effect composition library based on abstract wrapping type and the free monad GitHub stars GitHub commit activity
freestyle A cohesive & pragmatic framework of FP centric Scala libraries GitHub stars GitHub commit activity
hamsters A mini Scala utility library GitHub stars GitHub commit activity
idid A common interface for different Id types GitHub stars GitHub commit activity
lamma Lamma schedule generator for Scala is a professional schedule generation library for periodic schedules like fixed income coupon payment, equity deravitive fixing date generation etc. GitHub stars GitHub commit activity
larray Large off-heap arrays and mmap files for Scala and Java GitHub stars GitHub commit activity
log4s High-performance SLF4J wrapper for Scala. GitHub stars GitHub commit activity
izumi Productivity-oriented collection of lightweight fancy stuff for Scala toolchain GitHub stars GitHub commit activity
Monocle Optics library for Scala GitHub stars GitHub commit activity
nscala-time A new Scala wrapper for Joda Time based on scala-time GitHub stars GitHub commit activity
logging Scala Logging Library GitHub stars GitHub commit activity
quicklens Modify deeply nested case class fields GitHub stars GitHub commit activity
scala-records Labeled records for Scala based on structural refinement types and macros. GitHub stars GitHub commit activity
refined Simple refinement types for Scala GitHub stars GitHub commit activity
resolvable None GitHub stars GitHub commit activity
scala-async An asynchronous programming facility for Scala GitHub stars GitHub commit activity
scala-graph Graph for Scala is intended to provide basic graph functionality seamlessly fitting into the Scala Collection Library. Like the well known members of scala.collection, Graph for Scala is an in-memory graph library aiming at editing and traversing graphs, finding cycles etc. in a user-friendly way. GitHub stars GitHub commit activity
scala-logging Convenient and performant logging library for Scala wrapping SLF4J. GitHub stars GitHub commit activity
scalameta Library to read, analyze, transform and generate Scala programs GitHub stars GitHub commit activity
Scalactic Small library of utilities related to quality that helps keeping code clear and correct.
scalaz Principled Functional Programming in Scala GitHub stars GitHub commit activity
scribe Practical logging framework that doesn't require any other logging framework and can be completely configured programmatically. GitHub stars GitHub commit activity
shapeless Generic programming for Scala GitHub stars GitHub commit activity
simulacrum First class syntax support for type classes in Scala GitHub stars GitHub commit activity
squid Squid – type-safe metaprogramming and compilation framework for Scala GitHub stars GitHub commit activity
stateless-future Asynchronous programming in fully featured Scala syntax. GitHub stars GitHub commit activity
tinylog tinylog is a lightweight logging framework for Java, Kotlin, Scala, and Android GitHub stars GitHub commit activity
util Wonderful reusable code from Twitter GitHub stars GitHub commit activity

Misc

Projects that don't fit into any specific category.

Name Description GitHub Activity
Agora Library of vote-counting algorithms for elections.
Ammonite Scala Scripting GitHub stars GitHub commit activity
aws4s Non-blocking AWS SDK for Scala exposing strongly-typed APIs built on top of http4s, fs2 and cats GitHub stars GitHub commit activity
bootzooka Simple project to quickly start developing a Scala-based microservice or web application, without the need to write login, user registration etc. GitHub stars GitHub commit activity
eclair A scala implementation of the Lightning Network. GitHub stars GitHub commit activity
fansi Scala/Scala.js library for manipulating Fancy Ansi colored strings GitHub stars GitHub commit activity
fs2-aws fs2 utilities to interact with AWS GitHub stars GitHub commit activity
google4s A lean, functional library for Google Cloud Services in Scala GitHub stars GitHub commit activity
google-api-scala This API is a wrapper for the google java libraries. Currently mapping Admin Directory, Drive, and Calendar. GitHub stars GitHub commit activity
mailgun4s Mailgun API implementation in Scala GitHub stars GitHub commit activity
media4s Scala command-line wrapper around ffmpeg, ffprobe, ImageMagick, and other tools relating to media. GitHub stars GitHub commit activity
miniboxing-plugin Miniboxing is a program transformation that improves the performance of Scala generics when used with primitive types. It can speed up generic collections by factors between 1.5x and 22x, while maintaining bytecode duplication to a minimum. You can easily add miniboxing to your sbt project: GitHub stars GitHub commit activity
YahooFinanceScala A non-blocking Yahoo Finance Scala client GitHub stars GitHub commit activity
ostinato A chess library that runs on the server (Scala) and on the browser (ScalaJS). GitHub stars GitHub commit activity
pdf4s Simplified wrapper to create PDFs in Scala GitHub stars GitHub commit activity
play-swagger Swagger spec generator for play framework GitHub stars GitHub commit activity
powerscala Powerful framework providing many useful utilities and features on top of the Scala language. GitHub stars GitHub commit activity
PPrint Pretty-printing value, types and type-signatures in Scala GitHub stars GitHub commit activity
pureconfig A boilerplate-free library for loading configuration files GitHub stars GitHub commit activity
REPLesent A neat little tool to build presentations using the Scala REPL GitHub stars GitHub commit activity
scala-ssh Remote shell access via SSH for your Scala applications GitHub stars GitHub commit activity
scalan Generic framework for development of domain-specific compilers in Scala GitHub stars GitHub commit activity
scala-stm A library-based Software Transactional Memory (STM) for Scala, coupled with transactional sets and maps GitHub stars GitHub commit activity
Scavenger An experimental automated theorem prover.
service-chassis A scala chassis to get your applications and services bootstrapped quickly GitHub stars GitHub commit activity
settler boilerplate-free typed settings generation in Scala GitHub stars GitHub commit activity
YahooFinanceScala A non-blocking Yahoo Finance Scala client GitHub stars GitHub commit activity

Android

Scala libraries and wrappers for Android development.

Name Description GitHub Activity
sbt-android An easy-to-use sbt plugin for working with all Android projects GitHub stars GitHub commit activity
gradle-android-scala-plugin gradle-android-scala-plugin adds scala language support to official gradle android plugin GitHub stars GitHub commit activity
macroid A modular functional UI language for Android GitHub stars GitHub commit activity
scaloid Scaloid makes your Android code easy to understand and maintain. GitHub stars GitHub commit activity

HTTP

Scala libraries and wrappers for HTTP clients.

Name Description GitHub Activity
akka-http The Streaming-first HTTP server/module of Akka GitHub stars GitHub commit activity
reboot Scala wrapper for the Java AsyncHttpClient. GitHub stars GitHub commit activity
finch Scala combinator library for building Finagle HTTP services GitHub stars GitHub commit activity
fintrospect Implement fast, type-safe HTTP webservices for Finagle GitHub stars GitHub commit activity
http4s A minimal, idiomatic Scala interface for HTTP GitHub stars GitHub commit activity
jefe Manages installation, updating, downloading, launching, error reporting, and more for your application. GitHub stars GitHub commit activity
lolhttp An HTTP Server and Client library for Scala. GitHub stars GitHub commit activity
requests-scala A Scala port of the popular Python Requests HTTP client: flexible, intuitive, and straightforward to use. GitHub stars GitHub commit activity
RosHTTP Unified Scala.js + Scala HTTP client API GitHub stars GitHub commit activity
scalaj-http Simple scala wrapper for HttpURLConnection. OAuth included. GitHub stars GitHub commit activity
scalaxb scalaxb is an XML data binding tool for Scala. GitHub stars GitHub commit activity
spray A suite of scala libraries for building and consuming RESTful web services on top of Akka: lightweight, asynchronous, non-blocking, actor-based, testable GitHub stars GitHub commit activity
sttp The Scala HTTP client you always wanted! GitHub stars GitHub commit activity
tubesocks A comfortable and fashionable way to have bi-directional conversations with modern web servers. GitHub stars GitHub commit activity

Semantic Web

Scala libraries for interactions with the Web of Data, and other RDF tools.

Name Description GitHub Activity
banana-rdf Banana RDF GitHub stars GitHub commit activity
rdfp RDF stream processing framework in Scala GitHub stars GitHub commit activity
scowl A Scala DSL for programming with the OWL API. GitHub stars GitHub commit activity

Metrics and Monitoring

Scala libraries for gathering metrics and monitoring applications.

Name Description GitHub Activity
kamon-scala Kamon Scala Integration GitHub stars GitHub commit activity
metrics-scala The scala API for Dropwizard's Metrics. GitHub stars GitHub commit activity

Parsing

Scala libraries for creating parsers.

Name Description GitHub Activity
atto friendly little parsers GitHub stars GitHub commit activity
fastparse Writing Fast Parsers Fast in Scala GitHub stars GitHub commit activity
parboiled2 A macro-based PEG parser generator for Scala 2.10+ GitHub stars GitHub commit activity
scala-parser-combinators simple combinator-based parsing for Scala. formerly part of the Scala standard library, now a separate community-maintained module GitHub stars GitHub commit activity
cats-parse A parsing library for the cats ecosystem GitHub stars GitHub commit activity
scallion LL(1) parser combinators in Scala GitHub stars GitHub commit activity

Sbt plugins

Sbt plugins to make your life easier.

Name Description GitHub Activity
better-monadic-for Desugaring scala for without implicit withFilters GitHub stars GitHub commit activity
coursier Pure Scala Artifact Fetching GitHub stars GitHub commit activity
mdoc Typechecked markdown documentation for Scala GitHub stars GitHub commit activity
sbt-api-mappings An Sbt plugin that fills apiMappings for common Scala libraries. GitHub stars GitHub commit activity
sbt-apidoc A port of apidocjs https://apidocjs.com to sbt, to document REST Api GitHub stars GitHub commit activity
sbt-assembly Deploy fat JARs. Restart processes. (port of codahale/assembly-sbt) GitHub stars GitHub commit activity
sbt-buildinfo I know this because build.sbt knows this. GitHub stars GitHub commit activity
sbt-ci-release sbt plugin to automate Sonatype releases from Travis CI GitHub stars GitHub commit activity
sbt-classfinder SBT plugin for retrieving runtime information about the classes and traits in a project GitHub stars GitHub commit activity
sbt-dependency-check SBT Plugin for OWASP DependencyCheck. Monitor your dependencies and report if there are any publicly known vulnerabilities (e.g. CVEs). 🌈 GitHub stars GitHub commit activity
sbt-dependency-graph sbt plugin to create a dependency graph for your project GitHub stars GitHub commit activity
sbt-docker Create Docker images directly from sbt GitHub stars GitHub commit activity
sbt-doctest Doctest for scala GitHub stars GitHub commit activity
ensime-sbt Generates .ensime config files for SBT projects GitHub stars GitHub commit activity
sbt-ghpages git, site and ghpages support for sbt projects. GitHub stars GitHub commit activity
sbt-groll sbt plugin to roll the Git history GitHub stars GitHub commit activity
sbt-haxe None GitHub stars GitHub commit activity
sbt-header sbt-header is an sbt plugin for creating file headers, e.g. copyright headers GitHub stars GitHub commit activity
sbt-hepek Sbt plugin for rendering Scala objects to files. And more! GitHub stars GitHub commit activity
sbt-ide-settings SBT plugin for tweaking various IDE settings GitHub stars GitHub commit activity
sbt-jmh "Trust no one, bench everything." - sbt plugin for JMH (Java Microbenchmark Harness) GitHub stars GitHub commit activity
sbt-microsites An sbt plugin to create awesome microsites for your project GitHub stars GitHub commit activity
mima A tool for catching binary incompatibility in Scala GitHub stars GitHub commit activity
sbt-native-packager sbt Native Packager GitHub stars GitHub commit activity
sbt-pack A sbt plugin for creating distributable Scala packages. GitHub stars GitHub commit activity
sbt-pantarhei sbt plugin building and publishing release notes from github pull requests GitHub stars GitHub commit activity
sbt-pgp PGP plugin for sbt GitHub stars GitHub commit activity
sbt-release A release plugin for sbt GitHub stars GitHub commit activity
sbt-revolver An SBT plugin for dangerously fast development turnaround in Scala GitHub stars GitHub commit activity
sbt-robovm An sbt plugin for iOS development in Scala GitHub stars GitHub commit activity
sbt-scala-js-map A Sbt plugin that configures source mapping for Scala.js projects hosted on Github GitHub stars GitHub commit activity
sbt-scalafmt sbt plugin for Scalafmt GitHub stars GitHub commit activity
sbt-scoverage sbt plugin for scoverage GitHub stars GitHub commit activity
sbt-site Site generation for sbt GitHub stars GitHub commit activity
sbt-sonatype A sbt plugin for publishing Scala/Java projects to the Maven central. GitHub stars GitHub commit activity
sbt-sublime An sbt plugin for generating Sublime Text projects with library dependencies sources GitHub stars GitHub commit activity
sbt-unidoc sbt plugin to create a unified API document across projects GitHub stars GitHub commit activity
sbt-updates sbt plugin that can check Maven and Ivy repositories for dependency updates GitHub stars GitHub commit activity
sbt-view SBT Plugin for Viewing ScalaDoc and JavaDoc GitHub stars GitHub commit activity
sbteclipse Plugin for sbt to create Eclipse project definitions GitHub stars GitHub commit activity
scala-clippy Good advice for Scala compiler errors GitHub stars GitHub commit activity
ScalaKata2 Interactive Playground GitHub stars GitHub commit activity
splain better implicit errors for scala GitHub stars GitHub commit activity
tut doc/tutorial generator for scala GitHub stars GitHub commit activity
xsbt-web-plugin Servlet support for sbt GitHub stars GitHub commit activity

XML / HTML

XML and HTML generation and processing

Name Description GitHub Activity
scala-scraper A Scala library for scraping content from HTML pages GitHub stars GitHub commit activity
xs4s XML Streaming for Scala including FS2/cats support GitHub stars GitHub commit activity

Markdown

Name Description GitHub Activity
Laika Text Markup Transformer for sbt and Scala applications, transforming Markdown and reStructuredText to HTML, EPUB and PDF GitHub stars GitHub commit activity

JavaScript

JavaScript generation and interop libraries.

Name Description GitHub Activity
scala-js-fiddle Source code for Scala.jsFiddle GitHub stars GitHub commit activity
scala-js Scala.js, the Scala to JavaScript compiler GitHub stars GitHub commit activity

Scheduling

Name Description GitHub Activity
akka-quartz-scheduler Quartz Extension and utilities for cron-style scheduling in Akka GitHub stars GitHub commit activity

Templating

Web templating engines.

Name Description GitHub Activity
beard A lightweight, logicless templating engine, written in Scala and inspired by Mustache GitHub stars GitHub commit activity
scalatags ScalaTags is a small XML/HTML construction library for Scala. GitHub stars GitHub commit activity
scalate Scalate is a Scala based template engine which supports HAML, Mustache and JSP, Erb and Velocity style syntaxes. GitHub stars GitHub commit activity
twirl Twirl is Play's default template engine GitHub stars GitHub commit activity
hepek Typesafe HTML templates in pure Scala. Static site generator included! Play and ScalaJS support! GitHub stars GitHub commit activity

Tools

Name Description GitHub Activity
scala-trace-debug Macro based print debugging. Locates log statements in your IDE. GitHub stars GitHub commit activity
bloop Bloop is a build server and CLI tool to compile, test and run Scala fast from any editor or build tool. GitHub stars GitHub commit activity
codacy-scalameta Codacy tool for Scalameta GitHub stars GitHub commit activity
coursier Pure Scala Artifact Fetching GitHub stars GitHub commit activity
dregex Dregex is a JVM library that implements a regular expression engine using deterministic finite automata (DFA). It supports some Perl-style features and yet retains linear matching time, and also offers set operations. GitHub stars GitHub commit activity
fast-string-interpolator Scala macro that generates ultra-fast string interpolators. GitHub stars GitHub commit activity
fastring Extremely fast string formatting GitHub stars GitHub commit activity
gitbucket A Git platform powered by Scala with easy installation, high extensibility & GitHub API compatibility GitHub stars GitHub commit activity
giter8 a command line tool to apply templates defined on GitHub GitHub stars GitHub commit activity
metals Scala language server with rich IDE features 🚀 GitHub stars GitHub commit activity
mill Your shiny new Java/Scala build tool! GitHub stars GitHub commit activity
pos Macro based print debugging. Locates debug statements in your IDE. Supports logging. GitHub stars GitHub commit activity
sbt sbt, the interactive build tool GitHub stars GitHub commit activity
scalafix Refactoring and linting tool for Scala GitHub stars GitHub commit activity
Scalafmt Code formatter for Scala
scalariform Scala source code formatter GitHub stars GitHub commit activity
scalastyle scalastyle GitHub stars GitHub commit activity
Scalatex Programmable, Typesafe Document Generation GitHub stars GitHub commit activity
scapegoat Scala compiler plugin for static code analysis GitHub stars GitHub commit activity
scaps Scala API Search GitHub stars GitHub commit activity
wartremover Flexible Scala code linting tool GitHub stars GitHub commit activity
stone URL (de)construct. Withers. GitHub stars GitHub commit activity
scalajs-router ScalaJS frontend router GitHub stars GitHub commit activity

Geospatial

Libraries to aid with geospatial calculations and artifacts.

Name Description GitHub Activity
geotrellis GeoTrellis is a geographic data processing engine for high performance applications. GitHub stars GitHub commit activity
osm4scala Scala and Spark library focused on reading OpenStreetMap Pbf files. GitHub stars GitHub commit activity
rtree2d RTree2D is a 2D immutable R-tree with STR (Sort-Tile-Recursive) packing for ultra-fast nearest and intersection queries GitHub stars GitHub commit activity
sfcurve LocationTech SFCurve is a Scala library for the creation, transformation, and querying of space-filling curves GitHub stars GitHub commit activity

Devops

DevOps related tools and libraries.

Name Description GitHub Activity
skuber A Scala Kubernetes client library GitHub stars GitHub commit activity

Learning Scala

Nice books, blogs and other resources to learn Scala

Books

Exercises

Tutorials and courses

Community Members' Blogs

Company Blogs

Podcasts

  • The Scala Logs - Interviewing developers, open source contributors, subject matter experts, and the like to talk about FP, Scala, open source, and their interests.
  • Scala Love - Podcast about the Scala Programming Language and its community
  • CoRecursive Interviews - In-depth Interviews with software developers, often on the subject of scala libraries and functional programming.

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A community driven list of useful Scala libraries, frameworks and software.

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