Xiph QuickTime Components (XiphQT) is, in short, the solution for Mac and Windows users who want to use Xiph formats in any QuickTime-based application, e.g. playing Ogg Vorbis in iTunes or producing Ogg Theora with iMovie.
gtools is an extension for the mercurial version control system. The extension provides a graphical user interface for status, log, and commit operations.