sentence: referenced developers for adobe systems , quark , inc . , apple and microsoft , j2s develops and provides : iphone apps flex & air rich clients indesign & indesign server plug-ins livecycle product integration ( livecyle designer , livecyle forms , livecyle workflow ... ) other extensions ( photoshop , acrobat , illustrator , quarkxpress , ... ) applications operating on windows and/or macos handling of file formats ( xml , xmp , iptc , jpeg , pdf , ... ) internet technologies ( apache , flex , asp , php , cgi , html ... ) the preferred language is c++ and actionscript , other languages used include c , php , asp , pascal , visual basic , and perl .