Ranked in these QuestionsQuestion Ranking
Pro Multiple distributions available for download
Ubuntu, Debian, Fedora, ArchLinux, Kali Linux, openSUSE. You can even install more than one at a time.
Pro Easy configuration
The images are preconfigured for Android, so everything mostly just works.
Pro Access to the Android filesystem
You can read and write files outside of the app's sandbox via a mount point in the chroot environment.
Con Website is down
The project may have been abandoned.
Con Drains battery
These are full desktop distributions. Running them takes a lot of power.
Con Requires root permissions
You can only install this on a rooted device.