Metior is a source code history analyzer that provides various statistics about a source code repository and its change over time.

Wrapper for Yandex.Metrika API

Port of the old, venerable ActsAsTree with a bit of a twist

Money datatype for Mongoid. Inspired by Ruby Money. Makes handling money simple. Stores the value in the db as cents. Currently handles USD.

A small and simple efficient extension to Monologue that replace the default WYSIWYG editor with a Markdown editor.

A tail(1)-like utility for nginx log files. It supports parsing, filtering and formatting individual log lines.

Easy denormalization for your ActiveRecord models

A plugin/gem that provides access to the Prowl API (http://prowlapp.com). Works with Rails 2 or 3 as well as any other Ruby web frameworks or in your own scripts.

Runs regular Rails/ActiveRecord migrations via the Percona Toolkit pt-online-schema-change tool.

A Ruby wrapper around the DPS-hosted PxPay service

Logs exceptions inside a database table. Now available as gem for Rails3 (previously a plugin for Rails2)

Port of the old, venerable ActsAsTree with a bit of a twist

Simple utility to pull image urls from web page

ActiveRecord-like associations for ActiveResource

Active Record caching and indexing in memcache.

RubiGen - Ruby Generator Framework

A simple to use, yet powerful Ruby framework for building console-based applications.

This is a Ruby API for Fitbit.com, currently scraping, but soon will use the officail API (when released)

Call Lua from Ruby (and Ruby from Lua in Ruby)

ScheduleFu allows scheduling events with dates and times. It includes both the model and view portions of a calendar. It borrow heavily from acts_as_calendar (http://github.com/dball/acts_as_calendar) and calendar_helper (http://github.com/topfunky/calendar_helper).