At the current state, Stash is better than GitLab 

    GitLab, on the other hand, has two advantages over Stash ... GitLab is under active development and there is a new release with reasonable amount of content every month.

Stash 2.9 was just released [1] about seven weeks after Stash 2.8 [2] about seven weeks after Stash 2.7 [3].

[1] https://confluence.atlassian.com/display/STASH/Stash+2.9+rel...

[2] https://confluence.atlassian.com/display/STASH/Stash+2.8+rel...

[3] https://confluence.atlassian.com/display/STASH/Stash+2.7+rel...