Simian is an enterprise-class Mac OS X software deployment solution with Google App Engine-based hosting and a future proof client based on the Munki open source project.
ICalendar Validator checks the encoding and structure of your ICalendar resources against the ICalendar specifications.
icalendar.rb is a Ruby library for parsing and generating iCalendar files.
A news reader.
A mutt patch that adds a sidebar showing all mail folders.