Hi,
for all of you living in Outlook: Jello Dashboard maybe an alternative to netcentrics.

It's opensource, it supports exchange, it's based on tasks and categories, therefore you can have all your tasks on your mobile device if it supports syncing to outlook tasks or exchange.
[EDIT 1+2] And it needs NO administrative privileges for installation, you can just unzip it, since it's pure HTML and javascript.

It's a bit rough around the edges in some cases...

http://jello-dashboard.net

Regards
Manuel