At Thumbtack we use Github for our source control, but not our code review. We use rietveld -- https://code.google.com/p/rietveld/ https://code.google.com/p/ri

At Thumbtack we use Github for our source control, but not our code review. We use rietveld -- https://code.google.com/p/rietveld/ https://code.google.com/p/rietveld/, which is an open source code review tool made to be similar to Google's internal code review tool, Mondrain. It has a much better view of the diff, incorporating much more context and a side-by-side view (here is a example change I just randomly pulled from rietveld's internal rietveld: https://codereview.appspot.com/8726052/diff/1/pom.xml https://codereview.appspot.com/8726052/diff/1/pom.xml). It also has the ability to group multiple in-line comments together in chunks, so it is apparent to coworkers when one round of the code review is done and they should work on it and get it back to you. It also has tons of other great features (email integration, keyboard shortcuts for moving around the code, etc etc). Of course, you can only use this if you control a project, and you will have to do a little integration work, but if code review is an important part of your team's workflow, I highly recommend the investment.