It's always great to see alternatives and competitors when it comes to backend platform services. PocketBase is a great alternative for projects that require a real-time database, authentication, file storage, or admin dashboard but doesn't need the bloat of a large backend.
It's worth noting that PocketBase is maintained by one author. It does have 19 contributors and 17k GitHub stars at the time of this writing though.
Check out their GitHub page or support them here.