Desktop Game . Mac osx and windows in unity .

how and which 3rd party integration we can use for desktop(windows and mac ) game using unity ?
for inApp purchase ? like we use iab for ios and android .
for Ads and video ads ? we use chartboost , admob or revmob for ios and android .
but what we use for pure desktop games ?

This might help: http://forum.unity3d.com/threads/desktop-game-monetisation.137065/