Scientific gems for Ruby. This is the full installation with rigid version constraints.

Monitor and Index a directory and back it up to backup server.

Deamon for monitoring file changes in set of patterns (blobs).

Replicate models across applications

Map US postal codes to US timezones. Compatible with Rails.

Implementing pathfinding for Rails records

A wrapper around the AMQP gem to support easy messaging between applications.

nmax function

Organise background tasks so they will not overload the machine(s) running the tasks, while still giving a fair, balanced allocation of running time to members in the queue

SEOmoz Background Job Framework

Boggle CLI app which helps improve your game

Create realistic demo data by simulating events occurring over some time period

A discrete math interactive terminal app with sub-menus and demos including a RubyGems checksum validator and Big-O benchmarks using a spinner with threads

A collection of algorithms for doing Targeted Association Rule Mining

See: http://research.homeunix.org.uk

Beaneater mock for testing

A building and Internet of Things automation system

A* pathfinding in Ruby, using C datastructures to speed things up.

pomelo-citrus-scheduler is a simple clone of pomelo-scheduler, it is a schedule tool and provide a schedule module which is highly efficient and can support large number job schedule

A Ruby convenience library for publishing messages using the EPCP protocol