<a href="https://okdb.io/p/pricing" rel="nofollow">https://okdb.io/p/pricing</a> says there's a BSD licensed community edition.<p>Anyone know where the source code is hosted?
Looks like Operational Transformation is getting popular on HN lately, I have a question on another topic though - wondering how would you connect such systems to an existing infrastructure and especially authentication, to enforce user permissions/roles, etc.