Some of the OS is proprietary especially the android layer, the rest is open source which is based on linux Meego owned by Nokia. I believe quite a few of the Nokia guys went further into developing Sailfish Os. I find the Russian link ( also Votron) also a bit crap. But i dont like the heavy dependence of Google either…
SailfishOS is heavily closed source and Jolla used to be linked to Russia with Rostelecom owning 60%+ of it.
Some of the OS is proprietary especially the android layer, the rest is open source which is based on linux Meego owned by Nokia. I believe quite a few of the Nokia guys went further into developing Sailfish Os. I find the Russian link ( also Votron) also a bit crap. But i dont like the heavy dependence of Google either…