Managing windows size and position in OSX
Observes filesystem changes using the same underlying API as Spotlight Provides a graphical representation of the file activity
It allows your computer to determine its context through gathering evidence from your environment (evidence sources), using flexible rule-based fuzzy matching to make an educated guess (rules), and then performing arbitrary actions upon changing context (
Perian is a free plugin that enables QuickTime to play almost every popular video format.
RCDefaultApp is a Mac OS X 10.2 or higher preference pane that allows a user to set the default application used for various URL schemes, file extensions, file types, and MIME types.