>>__jona+(OP)
Limits are not features. There are no limits on number of users, number of repos, etc. etc. However, you're fairly obviously not getting any of the features that are in the paid tiers of gitlab's own offering. It's open core[1], rather than just open source.
[1] https://about.gitlab.com/blog/2016/07/20/gitlab-is-open-core...