Gitlab

What are the tools and libraries that work for Gitlab ?

If you want to see packages to interfere with Git, see its own git page.

For Github, see Github, and see also the Git interface Magit and VC, the built-in version control system.

Packages

Get the list of opened issues, special commit mode

See git-commit-insert-issue, which works for Github and Gitlab (in the dev branch though). It has a commit minor mode which automatically fetches the opened issues when you type something like "Fixes #" in the commit message.

Libraries

glab.el, a minuscule Gitlab library

See glab.el. It's for Emacs 25 and onwards though. It's neat on how it handles the authentication (quite transparently for the user).