Ruby libraries

AST

ruby rubocop-ast

ruby parser

Administration

ruby capistrano

ruby sshkit

AutoComplete

ruby solargraph

ruby annotate

AutoLoaders

ruby zeitwerk

Authorization

ruby cancan

Banking

ruby bai2

Build

ruby rake

Code Complexity

ruby flog

ruby cycromatic

Clients

ruby ruby-kafka

ruby google-cloud-storage

Commandline Interface

ruby optparse

ruby thor

ruby foreman

Data

ruby statsd-instrument

Database

ruby lhm

ruby softer_delete

ruby redis-rb

Data Serialization

ruby yaml

ruby json

ruby csv

ruby red-arrow

Debugging

ruby debug

ruby pry

ruby byebug

Documentation

ruby rdoc	generate apidocs
ruby yard	generate apidocs (advanced)

File Management

ruby net-sftp

Interpreters

ruby irb

ruby pry

Metaprogramming

ruby state_machine

Monitoring

ruby statsd-instrumentation

Package Management

ruby ruby-install

ruby chruby

ruby ruby-build

ruby rbenv-gemset

ruby rbenv-gem-rehash

ruby rbenv

ruby rvm

ruby gems

ruby bundler

Profiling

ruby stackprof

ruby ruby-prof

Queue Jobs

ruby qless

ruby sidekiq

Templating

ruby eruby

Testing

ruby rspec

ruby minitest

ruby mocha

ruby webmock

ruby factory_bot

ruby factory_bot_rails

ruby sorbet

ruby tapioca

Web

ruby rails

ruby net::http

ruby faraday

ruby webrick

ruby nokigiri

ruby rack

ruby graphql-ruby

ruby thin

ruby httparty

ruby kramdown

ruby redcarpet