Now that Microsoft's bought out GitHub, I plan on migrating my active projects over to GitLab.com when I get the chance. I actually registered one of the earliest account over there (https://gitlab.com/michael) way back in 2012.
Looking forward to when they eventually get federation support (https://gitlab.com/gitlab-org/gitlab-ee/issues/4517). Gogs and Gitea are investigating this too. Cool to see they're all talking about doing it with ActivityStreams.
(Maybe one day we'll all learn our lesson and migrate to something like Fossil, with its integrated, decentralized, version controlled issue tracking and wikis integrated into the repository itself. But network effects seem to be against that.)