The Mocktopus is a Sinatra/thin-based Web API that lets you mock your app dependencies

A replacement for fixtures.

Declarative partial mocking for ActiveRecord

Provides an implementation of Presenter pattern, but without needs fo Rails

Easy manipulation of sets of ActiveRecord models

convert hashes based on translations associated with versions

Infura Exchange gem which implements Exchange::Blockchain::Abstract & Exchange::Wallet::Abstract.

Segment Cache for Mondrian written in JRuby with Redis as the cache store

A pure Ruby database driver for MonetDB (monetdb5-sql)

Moneypenny is a chat bot.

A MongoDB ActiveSupport Cache

Rails and Mongoid simplest helpers possible to directly upload file to S3 without hitting the server. Support concurrent uploads, progress bars, and more.

eager loading for mongoid

mongoid_location simplifies mongoid geo location calculations, experimental Mongoid 3.0 support

ODM framework for MongoDB - This is a temporary gem to be able to use mongoid with rails 3 in heroku easily

Easily build timelines, much like GitHub's news feed. But, on Mongoid tho.

Mongoid is an ODM (Object Document Mapper) Framework for MongoDB, written in Ruby. This version supports authentication to MongoDB with username and password

It is a MongoMapper's plugin to add auto incremented id in MongoMapper's documents.

Mass populate MongoDB.

Some tools and libraries to simplify tailing the mongod oplog