MessagePack is a binary-based efficient object serialization library. It enables to exchange structured objects between many languages like JSON. But unlike JSON, it is very fast and small.

Oga is an XML/HTML parser written in Ruby.

A Ruby client for the Cassandra distributed database.

A fast HTTP / Websocket Server with built-in Pub/Sub support (with or without Redis), static file support and many other features, optimized for Ruby MRI on Linux / BSD / macOS / Windows

A fast HTTP / Websocket Server with built-in Pub/Sub support (with or without Redis), static file support and many other features, optimized for Ruby MRI on Linux / BSD / macOS / Windows

Numo::NArray - New NArray class library in Ruby/Numo.

pygments.rb exposes the pygments syntax highlighter to Ruby

It wraps the OpenSSL library.

pygments.rb exposes the pygments syntax highlighter to Ruby

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

Midori is a Ruby Web Framework, providing high performance and proper abstraction.

Use libsass with Ruby!

This is the MySQL API module for Ruby. It provides the same functions for Ruby programs that the MySQL C API provides for C programs. This package is offered as gem for easy installation using RubyGems. It wraps unmodified tmtm's mysql-ruby extension into a proper gem. Please note that tmtm (To...

Ruby bindings for Lindera, a morphological analysis library for CJK text (Japanese, Korean, Chinese).

Ruby bindings to the magic(4) library

Ruby compiler and runtime for the google protocol buffers library.

Expose the bundled libstemmer_c library to Ruby.

Counting Bloom Filter implemented in Ruby

BlueCloth is a Ruby implementation of John Gruber's Markdown[http://daringfireball.net/projects/markdown/], a text-to-HTML conversion tool for web writers. To quote from the project page: Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to struc...

A fast Gherkin lexer/parser based on the Ragel State Machine Compiler.