There is LibreTaxi[0] although not quite the same experience.

[0] https://github.com/ro31337/libretaxi

If anyone wants to try and start this, an open source ride sharing app that cities could set up, hit me up on Twitter (@icpmacdo). I have been thinking about this for a while. I would use a node and react native stack.

Please post any suggested name's!!

It's not ride hailing, but...

https://github.com/onebusaway