Syck is a YAML parser library that is designed
to load data into scripting languages.
Extensions for Ruby, PHP, and Python are
Needle is a light-weight dependency injection (aka "inversion of control") container for Ruby. It supports type 2 and type 3 injection, interceptors, hierarchical namespaces, easy configuration (in Ruby), and a flexible integrated logging subsystem.
Copland is an Inversion of Control (Dependency
Injection) container for Ruby. It borrows architectural
concepts from the HiveMind Jakarta project, but
implements them in significantly different ways.
An HTML5 charting and visualization framework.
A user-friendly, Web-based accounting system.