Awesome! Compiles on Delphi 7 nicely, but on Turbo Delphi Explorer there's one little problem with phxLogger:
[Pascal Error] phxLogger.pas(326): E1030 Invalid compiler directive: 'ELEIF'
Changed it to "ELSEIF" and "ENDIF" to IFEND and everything works.
Haven't tried all the demos yet, but in Collisions demo objects are move only in diagonal directions.

+1 for idea to have fonts and GUI skins repository, also for particle effects.