http://blog.deveo.com/what-makes-deveo-different-from-github...
I would say the things you find in Deveo that you don't find in Github/GitLab/Bitbucket are at least, but not limited to:
- real multi-tenancy, e.g. you always login to your company rather than the system as a whole
- kanban board view for issues and ability to define the states for issues
- projects that contain repos rather than just repos
- git, svn, mercurial (svn is still alive, trust me)
- webdav repos (e.g. dropbox alternative)
- triggering hooks based on file/branch patterns
- better ux (debateable)
In addition our servers are running in Europe, which might or might not be a thing for you.
Try it out yourself and tell if you found something else. :) We naturally also want feedback for our product to be able to improve.