Quicksilver open sourced
Although not strictly tagging software, Quicksilver, one of the two best application launchers and all-around Mac enhancements (the other being LaunchBar), has been released as open sourced software to the general community. Although the developer has been promising this for quite some time, that it’s actually been accomplished is quite exciting; hopefully some talented programmer with lots of time on their hands will pick up the project and provide a much-need bug fix and overall revamp. Quicksilver is a beautiful piece of software, and one of the staples in many peoples’ do-it-yourself file system tagging systems.
If you yourself are interested in taking a peek at the source code, it is freely available from the BlackTree Google Code site. The current BlackTree release of Quicksilver remains a beta, although it has been updated for 10.5.