Ruby bindings for ZBar, a barcode recognition library. Uses FFI to interact with the underlying C library, but has no other dependencies.

Zen by Aikido is an embedded Web Application Firewall that autonomously protects Ruby apps against common and critical attacks.

Bitcoin toolkit for Ruby

Celluloid bindings to the ffi-rzmq library

It aims to be a feature complete Ethereum implementation and expects to achieve both research-friendly and high-performance.

A fast library for Constructive Solid Geometry

Simple wrapper around libcups to give CUPS printing capabilities to Ruby apps.

Given packages, versions, and a dependency graph, find a valid assignment of package versions

Ruby FFI bindings for libclang C interface.

A generator for Ruby FFI bindings, directly from header files via LLVM's Clang compiler

Ruby FFI bindings for the Hunspell spell checker.

An FFI wrapper around ncursesw 5.x for MRI Ruby 1.8.x, 1.9.x and JRuby.

This gem provides only the FFI wrapper for the ZeroMQ (0mq) networking library. Project can be used by any other zeromq gems that want to provide their own high-level Ruby API.

Automatically reloads your Rack based app on file change using Guard.

Hallon allows you to write Ruby applications utilizing the official Spotify C API.

Nested OpenStruct optimized for short-lived objects.

Beat Heroku's 60s boot timeout with a forward proxy.

krypt provides a unified framework for Ruby cryptography by offering a platform- and library-independent provider mechanism.

LevelDB for Ruby

High performance gradient boosting for Ruby