TKDO is a master TODO list with command line and
PyGTK interfaces. It takes all your VimOutliner
todo.otl outlines, merges them into a single flat
list, auto-sorts them, filters them, and adds
support for things like contexts and recurring
events. It also has a snooze button, to mark tasks
as "don't bug me about this for a while". The
entire system is based on plain text files, with a
GUI to make certain tasks easier and faster. Due
to its plain text nature, it's easy to extend or
customize the system with short scripts.