Pick all that apply. Pick only ones you are currently using, do not count older versions you've tried/used.
- Windows XP
- Windows Vista
- Windows 7
- Windows 8 / 8.1
- OS X Snow Leopard (10.6)
- OS X Lion (10.7)
- OS X Mountain Lion (10.8)
- OS X Mavericks (10.9)
- Android 2.2 Froyo
- Android 2.3.x Gingerbread
- Android 3.x Honeycomb
- Android 4.0 ICS
- Android 4.1, 4.2, 4.3 JellyBean
- Android 4.4 KitKat
- iOS 4.x
- iOS 5.x
- iOS 6.x
- iOS 7.x
- Ubuntu / Ubuntu based distro
- Debian / Debian based distro
- Slackware / Slax-based
- Arch Linux / Arch-based
- Gentoo / Gentoo-based
- Fedora Linux / Fedora-based
- Mandriva / Mandriva-based
- Chrome / Chromium OS
- Unlisted OS (please tell me)
- *BSD (Any BSD version or variant)
- Unlisted GNU/Linux Category