Replica sqlite files not browsable with standard sqlite3 program
Relationship filters - currently you can put relationships in the ‘select’ part of the query, but not the ‘where’ part. Relationship filters commonly needed to, i.e., find all issues with particular label.
Multi-column primary keys
Read permissions
Docs for easily deploying Zero on your own AWS or Fly.io account
Up to 20MB client-side and 1GB server-side per-replica