16.6
postmarketOS, now called Nura, is a free, open-source operating system project focused on extending the life of consumer electronics.
Free planAndroidLinux
Alternatives to Ubuntu Startup Disk Creator
26.2
Free planAndroid
36.1
Free planAndroidSelf-hosted
- 4
Linux Kodachi
Free planLinux5.8From $99 a year - 5
Qubes OS
Free planLinux5.8Free plan - 6
Whonix
Free planLinuxmacOSWindows5.5Free plan - 7
Tails
Free planLinux5.3Free plan - 8
/e/OS
AndroidWeb4.9 - 9
Kicksecure
LinuxmacOSWindows4.7 - 10
CalyxOS
Android4.6 - 11
GrapheneOS
Android4.6 - 12
LineageOS
Android4.6 - 13
Heads
Linux4.4 - 14
PureOS
Linux4.4 - 15
secureblue
Linux4.4 - 16
Septor
Linux4.4