What are some alternatives?
When comparing PStart and PortableApps.com, you can also consider the following products
LiberKey - Portable applications launcher, LiberKey includes 305 portable applications.
SyMenu - SyMenu is a portable menu launcher and Start Menu replacement to organize your applications quickly...
Quick Cliq - Quick Cliq - the best freeware portable application launcher and clipboard manager. Quick Cliq has many useful features...
The Portable Freeware Collection - One of the largest collections of free, portable software on the web.
Karan PC - Here is the place where you can download latest software, antivirus full version, best pc games, fix pc problem, updated software, software review
Portable Start Menu - Portable Start Menu - easy way to open/close applications on USB sticks