Find out the the best route between two point in a mountain site?

I am wondering if is there a good way or plugin that allows me to find out the best route between 2 points on a topo surface, considering the maximum gradient and total length. The closest I can find is this youtube tutorial using Galapagos.

But, in a more complicated site situation, it is hard to get the desired result. Any suggestion for a different approach? Maybe I am using the wrong software for the task ? Thanks

There’s a couple of topics on this already with several different solutions. Have a look:

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Thank you, Anders, I will look at the links you shared!

Thanks Kyrylo! I will try this plugin!

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This is not a plugin, this is a script! I was also looking for options for building a road, and this one suited me better than all of them

you could try component in Nautilus

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Thank you Saeed ! I will try this as well !