日本語カタカナから母音・子音によるインデックスを作成するライブラリ

javascript localize solution

Persist remote JSON APIs locally and vice versa

Gives you a fist full of code metrics

XMPP compatible reach chat organizer

Jeka is an awesome build/test/benchmarking tool

add Jenkins tasks to Capistrano

Ripped out the versioning rake tasks from jeweler

generate modern html scaffold

Painless verb conjugation

Jigsaw.com API. Incomplete coverage.

first jini gem

Jitsu is a frontend or meta build system for Ninja (http://github.com/martine/ninja), a lightning-fast but in itself (and by design) feature-poor build system. Jitsu reads project descriptions and generates Ninja buildfiles.

Simple rails generator that creates a view helper to add joliprint button to your view

a library that reads and write ledger format ledger files

Ruby interface to the joyent cloud API

helper methods for generating markup, soon: javascript helpers

No more need to download JQuery UI... just include jqueryui/yourtheme and everything just works! Rails 3.1 and up...

A simple rack app wrapper that gathers request metrics using Coda Hale's metrics library

A simple standalone jetty launcher for jruby rack apps