To the electronic/hardware devs here: do you know a (good - optional) diff tool for schematics/PCBs that is independent of a certain ECAD tool?

So far I know of cadlab.io, but I'd really like to have another possibility than an online service.

@Condor While EasyEDA might not be what I'm looking for, their file export to JSON might, to some degree. I wished some more closed source EDAs had the same policy as KiCAD in supporting human-readable output files. :/
But thank you.

Also, Altium seems to have introduced diff'ing by now. Which is interesting but not an option, because its license price is out of my league already in the student's version. 😦

@Condor Never mind.
Please do - there are some points where you might still notice it's not a commercially developed high-end EDA but it has become quite good by now.
I'm pretty sure someone already requested that - and I actually found some diff tools in the process, one using image magick which looks promising.