Cross Platform GUI Test Automation tool Linux version is LDTP, Windows version is Cobra and Mac version is PyATOM. Linux GUI testing is known to work on GNOME / KDE (QT >= 4.8) / Java Swing / ?LibreOffice / Mozilla application on all major Linux distribution Windows GUI testing is known to work on application written in .NET / C++ / Java / QT on Windows XP SP3 / Vista SP2 / Windows 7 / Windows 8 M