C# pure functional programming framework - come and get declarative!

Λrrow - Functional companion to Kotlin's Standard Library

The most powerful IO monad implementation in JS, possibly in any language!

A library for safer and smarter error- and "nothing"-handling in TypeScript.

Option, Result, and Either types for TypeScript - Inspired by Rust 🦀

Functors, Applicatives, And Monads in Python

Essential building-blocks for functional & safe TypeScript code

A cohesive & pragmatic framework of FP centric Scala libraries

learn-by-doing course/tutorial for functional programming on scala

Simple & Efficient data access for Scala and Scala.js

In this article I try to explain why Haskell keeps being such an important language by presenting some of its most important and distinguishing features and detailing them with working code examples. The presentation aims to be self-contained and does not require any previous knowledge of the language.

🥃 Functional Algebraic Data Types

FP-TS Cheat Sheet

Monad, Functional Programming features for Golang

Mu (μ) is a purely functional framework for building micro services.

Mu is a purely functional library for building RPC endpoint based services with support for RPC and HTTP/2

Either and Maybe monads for better error-handling in C++ ↔️

PHP Functional Programming library. Monads, common use functions and generic collections.

A library of Haskell-style morphisms ported to ES2015 JavaScript using Babel.

Boilerplate-free syntax for computations with effects