I use Gogs. Fast, very low resource usage, easy to install.
I've set up a small-ish Gogs server on a RPi and i beg to differ on the "easy to install" - this might be true if you can just get the packages and install it, but once you try to manually set it up you'll see that the docs are lacking, big time. And even if you've got it all set up: how are you supposed to update your install? IIRC, i've read somewhere that you're supposed to wipe & reinstall the whole thing (take t…
No wipe, just overwrite some files and that's it.