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

A helper to restore snapshots created by mongoexport

Periodically sends a ping command to prevent MongoDB Atlas free-tier clusters from becoming inactive.

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.

A mixin DSL for implementing cross-process mutexes/locks using MongoDB.

Add color, DB time (Rails), etc to your mongo logs. Requires just mongo gem; compatible with Mongoid 5-7, Rails, etc.

Sending emails asynchronously with mongodb

Masking production data mongodb for testing/development

A distributed lock using MongoDB as backend

Simple object mapper for MongoDB

Mongo Railtie Logging Adapter

Periodically backup new sections of the oplog for incremental backups.

Reads the oplog from a replica set and replays it to another mongo instance / rs.

mongo_persist

Mass populate MongoDB.

Rackable mongoDB based session management

Note: this gem is no longer offically supported by 10gen. For a list of MongoDB object mappers, see http://is.gd/gdehy

mongo-retry helper

Small Object Document Mapper for Mongo. you can update atomic with condition

Some tools and libraries to simplify tailing the mongod oplog