What are some alternatives?
When comparing PortableApps.com and LiberKey, you can also consider the following products
SyMenu - SyMenu is a portable menu launcher and Start Menu replacement to organize your applications quickly...
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
The Portable Freeware Collection - One of the largest collections of free, portable software on the web.
PStart - PStart is a simple tray tool to start user defined applications.
ASuite - ASuite A simple portable launcher for you ASuite is a simple open source portable launcher for Microsoft Windows.
Listary - Listary is a revolutionary search utility for Windows