Another one to compare it to is Atlassian Stash. It's not as full featured as GitHub but integrates really well with JIRA and Bamboo. It even has some feature

Another one to compare it to is Atlassian Stash. It's not as full featured as GitHub but integrates really well with JIRA and Bamboo. It even has some features that GitHub doesn't, like ACLs on branches. It's significantly less expensive that GHE. Currently, my startup is using GitLab. It does the job for the 16 or so developers we have. It has issue tracking, wiki, web hooks, merge requests. Pretty much all the same features as GitHub, but not as clean or pretty.