Key based pessimistic locking for Ruby and MongoDB. Is this key avaliable? Yes - Lock it for me for a sec will you. No - OK I'll just wait here until its ready.

Basic MongoMapper port of technoweenie's acts_as_versioned

Mongo Mapper ActsAsParanoid Plugin, modeled after Ryan Bigg's plugin

Mongo Mapper Strict Keys Plugin.

MongoMapper token is a gem for creating random, unique tokens for MongoMapper documents.

Simple object mapper for MongoDB

mongo_persist

Ruby profiling tool for MongoDB

Request logger for Rack apps

The micro ODM for Mongo. It is a full featured, repository-based ODM that doesnt get in the way.

An experimental Ruby library for running serverside Javascript in MongoDB.

A simple front-end for high performance aggregate counter stores in mongodb

Simple DSL for using an IndexTank search provider with Mongoid

ODM framework for MongoDB

A collection of utilities for working with MongoDB.

mongowiki is an sinatra-based wiki application, which persists your articles into an mongodb

Mongrep provides base classes and modules for implementing persistance layers for MongoDB using the repository pattern

Railsware Monkey Notification Gem

for hash, array, string and so on

A history of view events.