Open Source
.NET
Rake.NET
FAYE Client
Utility Assembly
General utilities (sockets, enumerations)
NHibernate Utilities
Basic repository tools (simple architecture, repository patterns)
Ruby Execution
Running Ruby from .NET unit tests (useful when writing .NET clients for Ruby servers)
NHibernate In-Memory/SQLite Testing Tools
Creates a session factory using an in-memory SQLite database, creates a schema, and keeps the schema there for multiple NHibernate sessions for unit testing purposes.
Async/General Unit Test Helper Methods
Ruby
Opal-RSpec
Key contributor to the Opal compatibility layer for RSpec
Karma Opal RSpec Plugin
Pulls Rails' Sprockets asset graph into Karma and allows running Opal-RSpec tests inside Karma's JavaScript runner
FacebookIcal
A proxy iCal app built on Rails that adds reminder times to Facebook events.
Linux/Python
CentOS Package Cron Utility
Python/SQLAlchemy script that sends concise email reports of package updates based on CentOS/RHEL security advisories