Fast Json Parser

Ruby/GSL is a Ruby interface to the GNU Scientific Library, for numerical computing with Ruby

Use jemalloc as default allocator, everywhere!

Ruby bindings to http://github.com/ry/http-parser and http://github.com/a2800276/http-parser.java

Jump consistent hash implementation for Ruby

This gem was originally added to the Metasploit Pcaprub gem. It's been spun out into its own gem for anyone who might want to programmatically get information on their network interfaces.

Nokolexbor is a high-performance HTML5 parser, with support for both CSS selectors and XPath. It's API is designed to be compatible with Nokogiri.

Ruby interface for the taglib C++ library, for reading and writing meta-data (tags) of many audio formats. In contrast to other libraries, this one wraps the C++ API using SWIG, not only the minimal C API. This means that all tags can be accessed.

Liquid performance extension in C

LLRB is LLVM-based JIT compiler for Ruby. Note that this gem can be only installed to fork of CRuby.

Ruby bindings for LZ4. LZ4 is a very fast lossless compression algorithm.

A very fast way to turn TeX math equations into beautifully rendered SVGs, to embed on the web. This library is mostly written in C and is a general purpose wrapper to GNOME's Lasem.

The openwsman gem provides a Ruby API to manage systems using the WS-Management protocol.

Ruby conversion of RPi.GPIO Python module

Use Valgrind memcheck without going crazy

A gemified version of Syck from Ruby's stdlib. Syck has been removed from Ruby's stdlib, and this gem is meant to bridge the gap for people that haven't updated their YAML yet.

Tracking of retained objects in CRuby

Ruby EXIF reader written in C extension.

Extra-lightweight SQLite3 wrapper for Ruby

Extra-lightweight SQLite3 wrapper for Ruby with bundled SQLite3