Weaviate
Vector databasesAn open-source vector database with hybrid search and built-in vectorization modules.
Weaviate is an open-source vector database that can also handle the embedding step itself: modules call an embedding model on ingest and query, so you can hand it raw text. It has strong hybrid search, combining vector and keyword scoring.
It runs self-hosted or as a managed cloud, and has a sizeable ecosystem of tools and integrations around it.
Where it's ideally used
A fit when you want hybrid search and the option to let the database handle vectorization for you.
Where it doesn't fit
A dedicated system to run — unnecessary when pgvector inside your existing Postgres would do.