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

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.

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.

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

LevelDB for Ruby

Provides bindings for many RRD functions (using ffi gem and librrd), as well as DSLs for graphic and rrd building. You must have librrd in your system!

LLVM bindings for Ruby

Capture Screenshots on Windows with Ruby to bmp, gif, jpg or png formats.

High performance gradient boosting for Ruby

A barcode and QR code library that works with regular Ruby (not just JRuby). This gem comes bundled with ZXing C++ (zxing-cpp) and interfaces with it using FFI. As such this gem works with most major Ruby distributions.

A barcode and QR code library that works with regular Ruby (not just JRuby). This gem comes bundled with ZXing C++ (zxing-cpp) and interfaces with it using FFI. As such this gem works with most major Ruby distributions. Modified to not require CMake as a build dependency.

Deterministic Bitcoin Address Generator.

bloombroom has two bloom filter implementations, a standard filter for bounded key space and a continuous filter for unbounded keys (stream). also contains fast C/FFI FNV hashing and fast bit field and bit bucket field (multi bits).

Bzip2::FFI is a Ruby wrapper for libbz2 using FFI bindings. The Bzip2::FFI Reader and Writer classes support reading and writing bzip2 compressed data as an IO-like stream.