SDL-Man
I have made a portable (as in compilable on several platforms) Pac-Man clone using the SDL library. Since it is of course an "unofficial" version, I named it SDL-Man after the library.
It is written in C, and released under the GNU GPL version 3 license. The source code can be downloaded here, and a Windows binary with SDL runtime libraries can be downloaded here.
If you compile it for yourself on a Unix platform; remember to have both the main SDL library and the supplemental SDL_Mixer library installed first.
Here is a screen-shot of the start menu:

And here is an ingame screen-shot:

Enjoy!