This Rake task investigates the application's tables definition, then tells you missing indexes

Exporting tool for Trac

Store attribute changes during ActiveRecord Transaction

Isolated multi-tenant Ruby on Rails engine to manage translations in the database in-place or in a backend with option to fork other translation databases or to request translations from a Crowdsourcing platform like Volontari.at

Ruby/AWS is a Ruby wrapper to the Amazon Product Advertising API. This version works with heroku as it looks for the .amazonrc file in Rails.root/config

Track custom business metrics using your existing database. One call to record nested, multi-dimensional counters with automatic rollup across configurable time granularities.

Round Trip generator for ontology engineering with GOSPL

this gem adds extra functions for basecamps's trix.js toolbar to the assets-pipeline

this gem adds basecamps's trix.js to the assets-pipeline

Checks if particular orders appear in CaseBlocks

Checks if particular orders appear in CaseBlocks

Helpers for MySQL connections and querying

http://willin.wang visit for more info.

Blimp CMS.

Rails plugin for crawling domains for detecting differences in the UI

Umlaut plugin for BorrowDirect linking

Umlaut service to provide fulltext, holdings, etc. from the Primo discovery solution.

gem install universe-db

A Ruby Gem for you to write update queries.

A service for registering local URIs and performing both local and remote URI lookups.