The administration framework for Ruby on Rails applications.

RailsAdmin is a Rails engine that provides an easy-to-use interface for managing your data

Simple, but flexible HTTP client library, with support for multiple backends.

Slim is a template language whose goal is to reduce the syntax to the essential parts without becoming cryptic.

General ruby templating with json, bson, xml, plist and msgpack support

Padrino is a full-stack ruby framework built upon Sinatra.

~/.js

Logic-less Ruby templates.

Industrial Strength Asset Packaging for Rails

A ruby gem for creating navigations (with multiple levels) for your Rails, Sinatra or Padrino applications. Render your navigation as html list, link list or breadcrumbs.

Ruby gem for colorizing printed text on ANSI terminals

Better distance of time in words for Rails

Lemonade is DEPRECATED now. Start using Compass Sprites.

Goldberg is a lightweight CI server written in Ruby which worries about Bundler & RVM so that you don't have to.

ANSI color formatting for terminal output in Ruby

Realtime web analytics

CSS-like selectors for JSON (Ruby implementation).