If all you need is a simple infobot and don't need a full RFC1459 implementation.

In-process caching library that provide memcached compatible interface.

Memcachestats is a library that captures important Memcached cluster statistics and pushes metrics to Ganglia

MemeMe is a command line meme generator loosely based on quickmeme.com

A gem to track memory leaks in Ruby by tracking which stacktraces creates objects that never gets unset again.

Collect and analyze memory usage data for each individual Rails action controller.

Manages a list of releases of software versions stored on S3

Working with monetary values as well as performing currency exchange.

I don't have time for a longer description

Convert between Mercator Meters and Latitude/Longitude (and vice versa)

An RFC6962-compliant implementation of Merkle Hash Trees

https://github.com/0dayinc/meshtastic/README.md

A small library to allow metaprogramming via method_missing without dealing with regular expression hell.

A rewrite of the MeteoUB library wich gets, parses and stores weather data from infomet.am.ub.es

Improvement to Methadone Clinic [http://github.com/dennisjbell/methadone-clinic] that adds subcommands, option interaction rules (requires/excludes), and improved argument handling, while continuing to provide a lot of small but useful features for developing a command-line app, including an opin...

Simple Ruby library for caching instance method of a class. Using Rails.cache as default caching.

Allows you to disable methods at run-time, such as when you want to ensure that certain methods are never called during a test suite.

Methodic : provide Hash table options arguments manager (specifications and validations

Slice your PostgreSQL tables in uniform partitions using the id module

Turns a video file into an animated gif.