Free alternative to U3 Smart Software

If you've ever used a flash drive with U3 software, you may have noticed its weird cd-emulating drivers that use 2 drive letters.  You may have also noticed when looking for more software to add from their site, most of them are not free. PortableApps offers an ever-expanding list of free applications you can add to your flash drive that runs on a pretty slick menu of its own.  Its features are best described on the site itself, so check it out:

http://portableapps.com