Accounting sucks. Well if you are trying to do it right it does. Bean machine gives you the power of an immutable double entry accounting system through the use of a simple transfer method. The idea is to make accounting easy by breaking it into easy to follow steps. Transfer this much from this account to that account.

Add single responsibility observers to your rails models

Unified way to take all of the log messages and direct them to the right place.

A small library that helps with models which can have multiple parent model types

ActiveRecord extension - Polymorphic associations with restricted allowed classes.

Benchmark Sweet is a suite to run multiple kinds of metrics. It can be configured to run memory, sql query, and ips benchmarks on a common set of code. This data can be collected across multiple runs of the code, to support multiple ruby or gem versions. This also generates more complex comparisons

An ambitious adapter for ActiveRecord

Contentz (pronounced "content zee") is an ActiveRecord extension that uses Zlib to compress/uncompress attribute data on write/read.

Better Active Record finders

Redis pushes a message (notification) to a channel when an active record entry is created or deleted

Improved alternative to rails built-in counter cache to work outside belongs_to

Probably the best interface for Delayed Job

Some matchers for more semantic tests.

Twroute listens for Twitter updates and redirects them to HTTP post requests

Active Extensions

Gem for easy health check

A API for the danish accounting program, Billys Billing

Bin checker identifies Turkish banks with bin numbers.

Provides BioSQL support for BioRuby.

This API provides a complete set of methods and classes to access the Ensembl database using Ruby programming language