Good news to all!
OpenMarias 1.0 is to be released soon. You can look forward to many new features.

QuickGame: special dialog window where you can watch match of three algorithms.

MinimaxPlayer: new algorithm that use techniques of artificial intelligence without cheating.

Profiler: you can develop own player and see how long it takes to decide on the card it plays

...and many bugfixes

Miso

YUML is good at quick creating uml diagrams: http://yuml.me/5a50933a