Default [Q] Anything in active-development for 2012 Nexus 7 that isn't Android?

I got a N7 again today, and was wondering if there were any custom operating systems that were being actively maintained that weren't Android. Something like Ubuntu Touch or the actual Ubuntu port (if I understand right, both are no longer actively maintained on the 2012 N7).

Device Ownership:

Current Devices:
Side Devices:
Nexus 7 (grouper) (franco.Kernel + Rasbeanjelly)
Galaxy Rush (SPH-M830) (Stock)

Ex Devices:
Galaxy Tab 7.0 (SGH-T849)
Galaxy Tab 2 7.0 (GT-P3113)
Galaxy Prevail (SPH-M820) (KoumaKernel + CTMod)
Nexus 4 (LGE960/mako) (franco.Kernel + RasSaber)
Nexus 10 (GT-P8110/manta) (franco.Kernel + RasSaber