- Debian - One of the earliest UNIX-like operating systems with a commitment to keeping nonfree software out of its system. (DFSG)
- Devuan - Fork of Debian without systemd. (Licenses)
- PureOS - FSF endorsed derivative of Debian. (Multiple licenses)
- LineageOS - Android distribution for phones and tablets and successor of CyanogenMod. (Multiple licenses)
- DivestOS - Long-term support for end-of-life Android devices. It is a vastly diverged unofficial soft fork of LineageOS.