Can you embed a binary in a Gem? Can you distribute it to multiple architectures?

Calculate the entropy of data

Ruby bindings for the envelopers envelope encryption library

Ruby library for Enzoic API

Tools to calculate Eddystone ephemeral identifiers

A Ruby binding for epoll(7)

Ruby Extension that allows for reads and writes to the /etc user db.

Ethash is Ethereum's mining algorithm.

EventMachine implements a fast, single-threaded engine for arbitrary network communications. It's extremely easy to use in Ruby. EventMachine wraps all interactions with IP sockets, allowing programs to concentrate on the implementation of network protocols. It can be used to create both network servers and clients. To create a server or client, a Ruby program only needs to specify the IP address and port, and provide a Module that implements the communications protocol. Implementations of several standard network protocols are provided with the package, primarily to serve as examples. The real goal of EventMachine is to enable programs to easily interface with other programs using TCP/IP, especially if custom protocols are required. The present alternative version 'eventmachine-with-ipv6' contains some crucial fixes for datagrams (UDP) and IPv6 developed since 2010 by Carsten Bormann and Iñaki Baz Castillo. This is needed for many applications in 2012, but might detract from the stability achieved for other typical uses of the base eventmachine. It is otherwise identical with base eventmachine. Install either base eventmachine or this version eventmachine-with-ipv6. If you have installed both, use gem 'eventmachine-with-ipv6' before require 'eventmachine' Alternatively use Bundler and write this in your gemfile: gem "eventmachine", :git => "git://github.com/cabo/eventmachine" Please send all bugs in this version to https://github.com/cabo/eventmachine/issues

Trace your Ruby function's execution path

Exerb support for mingw/rubyinstaller. Packaged ruby source files and ruby extensions files into a single PE executable file.

Ruby EXIF geo tagger based on libexif.

Helps manage ruby application specific environment variables for multiple apps in development.

extension tut

Watch directories using platform specific notifier.

This is a ruby interface for interacting with ezmlm-idx, an email list manager for use with the Qmail MTA, and the messages contained therein. (The -idx provides an extended feature set over the original ezmlm environment.)

Factorials as C extension.

Active Support impelementation in C for the ones who need for speed.

A naive bayes text classification algorithm built in C++, with a Ruby interface using Rice

Fast Bit String to Ruby Arrays of IDs, using C for magical speediness. Perfect for use with Redis Bit sets