Stash is great. We use it at work and it's quite simple yet powerful. You can set up branch permissions, require at least one approval before merging pull requ

Stash is great. We use it at work and it's quite simple yet powerful. You can set up branch permissions, require at least one approval before merging pull requests, one Bamboo build to pass etc. Since JIRA 6.1 (I think) you can branch from within JIRA, if it's wired up to Stash. (Although this might be any Git repository.)