Theres gerrit and reviewboard, both of which I would consider quite nice.
I dont know reviewable so it might have more sauce than the recommendations
I dont know reviewable so it might have more sauce than the recommendations
Side note, I honestly seriously think we need much better tooling than just these 2 for code reviews.
It combines concepts from GitHub, Gerrit, and other good review tools out there to make it easy and fast to reach consensus (which is what it's all about).
If you want to hear more you can email me at sam at habosa dot com