Windows: 

Windows 8 and 8.1 (32bit and 64bit), Windows Server 2012, Windows 7 (32bit and 64bit), 2008 (32bit, 64bit and R2), Vista (32bit and 64bit), 2003, XP (Service Pack 3 and above). 

Legacy support provided for  

Windows 2000 and earlier, Pocket PC  

and Windows CE 

Linux: 

The NetSupport Manager Linux client supports at the time of release:  

OpenSuSE 11.2 and later, SuSE Enterprise 11, SuSE Enterprise Server 11, CentOS 6 and later, Ubuntu/Edubuntu 9.04 and later, Debian 5 and 6, Red Hat Enterprise Linux 6,  Linux Mint 9 and later and Fedora 12 and later. Desktop Managers: GNOME, KDE, Unity 2D, Ubuntu Classic (No Effects Only), MATE and Cinnamon 

Mac: 

Mac OS X version 10.5 and later, Leopard, Snow Leopard, Lion and Mountain Lion, on Intel platforms. 

Mobile: 

Android 2.3.3 and Up, 4.4MB available 

Apple iOS 5.0 and Later, 11.8MB available 

Chrome: 

All Chrome OS products with network connections