Private Internet Access is a decent partner since they announced that they would...

Private Internet Access is a decent partner since they announced that they would gradually open source their software in March 2018.

https://news.ycombinator.com/item?id=16595975

While PIA did open source their iOS app and browser extensions, I'm a bit disappointed to see that their Android and desktop apps are still proprietary.

https://pia-foss.github.io/