GreenScreen is a build monitoring tool that is designed to be used as a dynamic Big Visible Chart (BVC) in your work area. It displays the status of builds from one or more build servers on a monitor, so that the team can see the status from anywhere in the room.

Make database queries available via HTTP

A tool for creating version controlled guides for open source projects, based on the Rails Guides framework

Web GUI for controlling Gush workflows

Use hobbit with some template niceties and other conveniences.

Happo, a perceptual diff tool for JS components

Open-source crowdfunding platform

Hbase API Client

Health mode exposes the system metrics via a JSON api. This opens the door for integration with web services.

CI-Joe alike CI system called Heidi.

Hell is an open source web interface that exposes a set of capistrano recipes as a json api, for usage within large teams

Thrifyt

hi, I'm here to debug your HTTP

A tool that identifies the people around by sniffing network traffic and mining social networks.

This package is Hiraku's modified rack. Original description is bellow. Rack provides minimal, modular and adaptable interface for developing web applications in Ruby. By wrapping HTTP requests and responses in the simplest way possible, it unifies and distills the API for web servers, web frameworks, and software in between (the so-called middleware) into a single method call. Also see http://rack.rubyforge.org.

The Screw Unit server conveniently serves your Screw Unit specs and javascript files and css stylesheets.

honyomi is a e-book (pdf) search engine. It have command line interface and web application. It will accelerate the e-book of your life.

An mpd client that acts as a web server. You can operate the mpd server from any browser.

Provides a simple way to double HTTP services, APIs etc, for testing.

Logs HTTP events (connections, requests and responses). A number of HTTP libraries are supported. Credit to the authors of the httplog gem for inspiration.