Ohayou(おはよう), HTTP load generator, inspired by rakyll/hey with tui animation.

A monitor of resources

dev tools, env vars, task runner

Rails N+1 queries auto-detection with zero false positives / false negatives

Wipe out inconsistent DB and schema.rb when switching branches. To do that, install this gem and use the standard rake db:migrate command.

全国の住所データAPI

An Emacs-like text editor written in Ruby

A NES emulator written in Ruby

Visualize, explore, and interact with your Rails application's models and associations with ease.

Automatically generates beautiful and easy-to-read ER diagrams from your database.

Create Rails projects with Ruby installed

Ruby binding for DuckDB

A command line tool that draw plots on the terminal.

It provides a set of APIs to rewrite AST node source code.

write snippet code to rewrite your project code

Library for stubbing and setting expectations on HTTP requests in Ruby.

Hypothesis-like property testing for Rust

Universally Unique Lexicographically Sortable Identifier implementation for Ruby

Analyze how a Git repo grows over time

Indexing all Ruby related videos

JSON implementation for Ruby

YARD is a Ruby Documentation tool. The Y stands for "Yay!"

A flexible distributed key-value datastore that is optimized for caching and other realtime workloads.

A Japanese text normalization library for Ruby follows the conventions of neologd, with some performance optimizations, without external dependencies.

Makes your background jobs interruptible and resumable by design.

Automated code reviews via mutation testing - semantic code coverage.

Calculates edit distance using Damerau-Levenshtein algorithm

A Ruby library for testing your library against different versions of dependencies.

A more helpful way to view differences between complex data structures in RSpec.