Difference between APM stack and PX4 stack?

[Drone (PKB)]

Hello everyone!

What is the diference between APM stack and px4 stack?

Please let me know

Thanks

[khancyr]

some anwsers in this thread PX4 vs ArduPilot - when to choose what

[dkemxr (Dave)]

Type into the Search box above “what is the difference between Ardupilot and PX4”. It’s been asked many times.

BTW-APM is a piece of obsolete hardware.