We are happy to announce that we just pushed a massive update for Safejumper. It is now fully compatible with Windows 8.1 and it comes with many improvements of stability. It is also now made fully available on Linux with auto-updater integrated just like it is for Windows (Safelauncher). Please make sure you remove completely old Safejumper and install the new one. You can download Safejumper for Windows here and Safejumper for Linux there. We are still working hard on Safejumper for Mac OS X, this will come within next two weeks we promise. Then we will focus on mobile apps. Enjoy!