What are the best Android projects according to HackerNews?

serenity
23 comments
redox
12 comments
bottlerocket
9 comments
illumos-gate
6 comments
its
6 comments
vinix
6 comments
tock
6 comments
Theseus
6 comments
unikraft
4 comments
toaruos
4 comments
nebulet
4 comments
IncludeOS
3 comments
inferno-rpi
3 comments