11 fast hash functions for general purpose non-cryptographic use implemented originally by Arash Partow. The Ruby C extension.

Fast hash unnesting

A Capstone wrapper for Ruby.

This calculates distance between two parts of the earth via Haversine formula at the speed of C

Ruby bindings for libhbsdcontrol

This tool allows to measure a fragmentation of the Ruby VM heap.

data compression library for embedded/real-time systems

a test to build C extension gem

call from jruby to java.

Faster implementation of some HexaPDF algorithms in C for still more performance

Enjoy MATH!

Faster float to string conversion.

HTML Cruncher is a streaming parser that'll gladly crunch through anything mildly resembling HTML.

A bridge between Ruby and Haskell

A Ruby gem that evaluates the Hungarian algorithm in C

A number of utilities, including getting the MAC address for an interface.

IRC bot for HW pinging with the Dream Cheeky Thunder missile launcher

ICE encryption library

A Unicode processing functions ruby gem, binding to ICU

non-repeating ID generation covering an almost maximal 32-bit range.