Phase 10 has three parts.
1) The user interface allows players to interact and play the game.
2) Computer players model remote players when not playing against other human players.
3) A server ties all the players together and allows players on both local and remote machines.
The UI and computer players in Phase 10 have been ported to wxWidgets and have been tested on both Windows and Linux. I've released the source files with build instructions to build the interface on any platform supported by wxWidgets.
The next step in the process is to re-write the server in wxWidgets. Because the server is only available on Win32 platforms currently, I'm not yet releasing builds platform specific builds of Phase 10. You can currently play Phase 10 on Linux (or other platforms) if you run the server on a machine running Windows and then connect to the remote machine. (Which is how you'd play someone remotely anyway.)
Watch for the next version (Pre 3) that will be fully ported to wxWidgets. From there, the UI will get some much needed usability work, the help files will be regenerated and a final release will follow shortly.