Some general information
At this time, development is already finished, the reasons are not known. The latest version was released under number 1.2. and date specified in the app file’s properties is on February 10, 2012. The developer’s site is portable-app.com and it is also not active today, it can be visited exclusively through Web Archive.
Process of portable application creating already has a classic structure, namely: a snapshot of system before installation and then after, while all necessary files and data will be packed into one executable file. When create, the entire system will be scanned of changed without ability to select a specific disk partition. Additionally, during application virtualization not possible to edit the project, for example Cameyo allows to do that. While working with P-Apps it is highly not recommended to use third-party software, you can’t remove it later from the project. And also you should use a clean OS, you can install it in a virtual machine, you will find it in Other utilities section. All portable application temporary files are stored in the Roaming\P-Apps system directory (sandbox). The change of sandbox location is not real, if you want copy packaged app with settings to another computer, you also need to manually transfer the settings.
Even without capabilities necessary to develop portable programs (editing project, selecting sandbox location, etc.), P-Apps is perfect for users who like to keep their OS clean. In respect that it is absolutely free and easy to use, the P-Apps would like for beginner developers. By the way, when working with this utility you may choose an isolation app level. There are three possible options: Low Secured, Medium Secured, or High Secured.
In the first case, packages can save user data/file in real locations. Access is restricted only to system folders such as %windir%. Such locations will be re-directed and handled in the virtual system. In second: user data/file saved in real location only for current user’s documents and desktop. Third option: restricts write access completely.