Boot large Ruby/Rails apps faster

Fluent SQL generation for golang

A Ruby client library for Apache Kafka

Modern concurrency tools including agents, futures, promises, thread pools, supervisors, and more. Inspired by Erlang, Clojure, Scala, Go, Java, JavaScript, and classic concurrency patterns.

A collection of useful, performant, and threadsafe Go datastructures.

A simple but effective mini-profiler for ASP.NET MVC, ASP.NET and Ruby.

Migrate and update data alongside your database structure.

Gem for Rails 3 and 4, that helps validate overlap

state_select plugin allows you to easyly create dropdown list of states for a country provided as an option.

An excellent development aid. Will run "EXPLAIN" before each of your select queries in development, and provides a display which makes them easy to browse. In this fork, gemified and compatible wit…

Enable soft delete of ActiveRecord records. Based off defunct ActsAsParanoid and IsParanoid. Superseded by paranoia gem.

This rails plugin not only runs "EXPLAIN" before each of your select queries in development, but provides a small DIV in the rendered output of each page with the summary of query warnings that it …

A framework for building heavily versioned applications

Rack middleware to handle raw file uploads

Another seed library for Ruby

A devilishly handsome, mustache sporting, continuous integration server

An article on popular SOAP-Clients savon and handsoap

just an update of technoweenie's us_states for rails 2.2

Ruby: parallel processing made simple and fast

A lightweight clientside JSON document store,

Updated version of the ultraviolet library for 1.9

Updated version of the Textpow library for Ruby 1.9

Updated version of the plist library for Ruby 1.9

PersistJS is a JavaScript client-side persistent storage library

Custom Error Message Rails plugin

Continuous Integration server

Is it ruby 1.9 - an application for keeping track of which gems are ruby 1.9 compatible