What's the most popular portable applications manager? [closed]

I have a bunch of applications I carry around on a small flash drive, but I find it hard to keep everything up to date. I know about portableapps.com, but are there any other websites / repositories / resources on the subject? Ideally I'd like something that can manage both the 'installation' and updates for a range of tools.

Solution 1:

UpdateNotifier is probably not a portable applications manager.

But, it helps track updates on your freeware.
It scans installed applications and checks for updates.
I like its small footprint, and fast interface.

The site also enumerates another popular applications list based on these stats.

Solution 2:

LiberKey - Automatic online update of Portable Apps: the launcher programs scans update for ALL the installed apps. Furthermore, it will download AND install them automatically for you.

http://zia.blogspot.com/2009/06/liberkey-automatic-online-update-of.html