“There are, of course, differences, but the overall business models are very similar. PA is an open-source outfit, which makes them a bit more transparent than Thinstall, which has a mix of OSS and proprietary products. Since PA is purely open source, and relies a lot on the community to deliver portable-ized apps, their list of of programs is smaller and limited to open source and other freely-licensed software. Still, with the recent focus on OSS in the enterprise, one can’t help but see the value of a PortableApps version of OpenOffice sitting on a Citrix Server for thin-client and virtual desktop users to access.”