NMatrix is a linear algebra library for Ruby, written mostly in C and C++.

Obscenity is a profanity filter gem for Ruby/Rubinius, Rails (through ActiveModel), and Rack middleware

CAS 3.0 Strategy for OmniAuth

PacketFu is a mid-level packet manipulation library for Ruby. With it, users can read, parse, and write network packets with the level of ease and fun they expect from Ruby.

Easily setup logical replication and switchover to new database with minimal downtime

The Ruby binding of playwright driver 1.64.0

Tools to use the Pwned Passwords API.

A formatter for rubocop that outputs in checkstyle format

Russian language support for Ruby and Rails

SchemaPlus is a gem that simply pulls in a collection of other gems from the SchemaPlus family of ActiveRecord extensions

Integrates ServiceWorker into the Rails asset pipeline.

See history about your workers (GSoC project)

Ruby Google Analytics Measurement

Format dates and times based on human-friendly examples, not arcane strftime directives.

Calculates the similarity between texts using tf*idf

Make it easy to upsert on MySQL, PostgreSQL, and SQLite3. Transparently creates merge functions for MySQL and PostgreSQL; on SQLite3, uses INSERT OR IGNORE.

If string, numeric, symbol and nil values wanna be a boolean value, they can with the new #to_b method (and more).

ActiveRecord::Store but with type definition

active_admin skin

A quick and easy way to visually test out your application's API.