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 Heads
26.3
Ubuntu Startup Disk Creator writes an Ubuntu image to a USB stick to make bootable installation media.
Free planLinux
36.2
Free planAndroid
- 4
Ubuntu Touch
Free planAndroidSelf-hosted6.1Free plan - 5
Linux Kodachi
Free planLinux5.8From $99 a year - 6
Qubes OS
Free planLinux5.8Free plan - 7
Whonix
Free planLinuxmacOSWindows5.5Free plan - 8
Tails
Free planLinux5.3Free plan - 9
/e/OS
AndroidWeb4.9 - 10
Kicksecure
LinuxmacOSWindows4.7 - 11
CalyxOS
Android4.6 - 12
GrapheneOS
Android4.6 - 13
LineageOS
Android4.6 - 14
PureOS
Linux4.4 - 15
secureblue
Linux4.4 - 16
Septor
Linux4.4