Open source single-stack solution based on Java and Jetty.
Ranked in these QuestionsQuestion Ranking
Pro Just works
Setting up is easy and usage is intuitive.
Pro Free and open source
GitBlit is free and open source (under Apache License) .
Gitblit is available for Windows, OS X and Linux.
Pro Built-in authorization in windows
So you don't have to worry about setting up OpenSSH on Windows.
Con Access controls are repository-based
Built in access controls are not branch-based.
Con No code reviews
It's not possible to start any code reviews on Pull Requests
Con No Squash Merge
There is no Squash Merge functionality
Con No project admins
There's no separation between a system admin and a project admin. There's owners for projects, but to create a new repository one has to be a general admin.