I'm the admin of DocFetcher, a desktop-search app written in Java. Currently, we have a portable version which is capable of running on both Windows and Linux, provided that a Java Runtime is installed. On Windows, the program is launched with an Exe, on Linux with a shell script.
We'd like to make this portable version Portable Apps compatible. However, after having skimmed the docs, I have the impression that Portable Apps are generally Windows-only. Is this correct? And if so, are there any plans to support programs that run on multiple platforms, especially Java programs?