Comparison of OpenSource software for quadcopter controllers?

Question

PHP

If the opesors of controllers are enough, www.droneybee.com/best-flight-controller-quadcopter
Then the software that you can install on your scarf is not very good, I found only https://github.com/cleanflight/cleanflight
Maybe someone has met good reviews with description of the possibilities. (Support for GPS, magnetometers, barometric sensors)
Yes, and for the controllers themselves, it would be interesting to see a comparison in the form of a plate with characteristics.

Answer 1

Either check for the existence of the key in the template, or fix the controller so that the key is always passed.

Answer 2

Here is a list of quads with open firmware -- https://dronegarageblog.wordpress.com/2016/12/12/b...
Here is a comparison of hardware platforms and software:
https://oscarliang.com/best-flight-controller-quad ...