Dear every body,
I found this task manager seems intresting.
Tracks is a web-based application to help you implement
David Allen’s Getting Things Done™ methodology. It was built using
Ruby on Rails, and comes with a built-in webserver (
WEBrick),
so that you can run it on your own computer if you like. It can be run
on any platform on which Ruby can be installed, including Mac OS X,
Windows XP and Linux. Tracks is Open Source, free and licensed under the
GNU GPL.
http://getontracks.org/