Some operators for postgres is free for non commercial use, so its not truly open source even though its source available, one is crunchydata.
pgvecto.rs v0.4.0 I assumed was just not renamed. They have one for vectorchord too
Operators are good ways to support applications in CLI that aren't easy to setup in a cluster by default. You can make these databases redundant by setting replica higher than 1 and applying it, operator copies the db data and makes a new replica. It also helps with backups and restoring too.