I looked into it after this year's massive price hike... There's no meaningful alternative. We're on the FOSS version of GitLab now (GitLab-CE), but the lack of code ownership / multiple reviewers / etc. is a real pain and poses problems with accountability.

Honestly there are not that many features in Gitlab EE that are truly necessary for a corporate environment, so a GitLab-CE fork may be able to set itself apart by providing those. To me there are two hurdles:

• Legal uncertainties (do we need a clean room implementation to make sure Gitlab Inc doesn't sue for re-implementing the EE-only features into a Gitlab fork?)
• The enormous complexity of the GitLab codebase will make any fork, to put it mildly, a major PITA to maintain. 2,264 people work for GitLab FFS (with hundreds in dev/ops), it's indecent.

Honestly I think I'd be happy if forgejo supported gitlab-runner, that seems like a much more reasonable ask given the clean interface between runner and server. Maybe I should experiment with that...