Color is a Ruby library to provide RGB, CMYK, HSL, and other color space manipulation support to applications that require it. It provides optional named RGB colors that are commonly supported in HTML, SVG, and X11 applications. The Color library performs purely mathematical manipulation of the ...

ruby-opencv is a wrapper of OpenCV for Ruby. It helps you to write computer vision programs (e.g. detecting faces from pictures) with Ruby.

ZenTest provides 4 different tools: zentest, unit_diff, autotest, and multiruby. zentest scans your target and unit-test code and writes your missing code based on simple naming rules, enabling XP at a much quicker pace. zentest only works with Ruby and Minitest or Test::Unit. There is enough ev...

Pik is a tool to manage multiple versions of ruby on Windows. It can be used from the Windows command line (cmd.exe), Windows PowerShell, or Git Bash. I have yet to test on cygwin. >pik help commands add Adds another ruby location to pik. benchmark|bench Runs ben...

PIK is a tool to switch between multiple versions of ruby on Windows. You have to tell it where your different ruby versions are located using 'pik add'. Then you can change to one by using 'pik switch'. It also has a "sort of" multiruby functionality in 'pik run'.

OCRA (One-Click Ruby Application) builds Windows executables from Ruby source code. The executable is a self-extracting, self-running executable that contains the Ruby interpreter, your source code and any additionally needed ruby libraries or DLL.

Inline allows you to write foreign code within your ruby code. It automatically determines if the code in question has changed and builds it only when necessary. The extensions are then automatically loaded into the class/module that defines it. You can even write extra builders that will allow ...

Clarity - a log search tool By John Tajima & Tobi Lütke Clarity is a Splunk like web interface for your server log files. It supports searching (using grep) as well as trailing log files in realtime. It has been written using the event based architecture based on EventMachine and so allows rea...

Allows you to focus on a few tests with ease without having to use command-line arguments. Good for tools like guard that don't have enough brains to understand test output. Cf. minitest-autotest (an example of a test runner with strong testing logic). Inspired by https://github.com/seattlerb/mi...

This is the MySQL API module for Ruby. It provides the same functions for Ruby programs that the MySQL C API provides for C programs. This package is offered as gem for easy installation using RubyGems. It wraps unmodified tmtm's mysql-ruby extension into a proper gem. Please note that tmtm (To...

GeoHash encode/decode library for pure Ruby. It's implementation of http://en.wikipedia.org/wiki/Geohash

A Ruby implementation of the Patience diff algorithm. Patience Diff creates more readable diffs than other algorithms in some cases, particularly when much of the content has changed between the documents being compared. There's a great explanation and example [here][example]. Patience diff was...

Analyze code for potentially uncalled / dead methods, now with auto-removal.

ruby-mp3info read low-level informations and manipulate tags on mp3 files.

BlueCloth is a Ruby implementation of John Gruber's Markdown[http://daringfireball.net/projects/markdown/], a text-to-HTML conversion tool for web writers. To quote from the project page: Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to struc...

Ruby Stats is a port of the statistics libraries from PHPMath. Probability distributions include binomial, beta, and normal distributions with PDF, CDF and inverse CDF as well as Fisher's Exact Test.

A Sinatra plugin to provide convenience whilst performing asynchronous responses inside of the Sinatra framework running under async webservers. To properly utilise this package, some knowledge of EventMachine and/or asynchronous patterns is recommended. Currently, supporting servers include: ...

Use with Net::HTTP to do multipart form posts. IO values that have #content_type, #original_filename, and #local_path will be posted as a binary file.

Use with Net::HTTP to do multipart form posts. IO values that have #content_type, #original_filename, and #local_path will be posted as a binary file.

This is an update to the old `gem mirror` command. It uses net/http/persistent and threads to grab the mirror set a little faster than the original. Eventually it will replace `gem mirror` completely. Right now the API is not completely stable (it will change several times before release), howeve...