pgvector

pgvector is an open-source PostgreSQL extension for vector similarity search. It helps teams store embeddings alongside scraped content, so retrieval stays close to the data they already manage.

Key Features:

• PostgreSQL Extension - Add vector similarity search without moving data out of PostgreSQL.
• Unified Retrieval Store - Keep embeddings and scraped content in one database for search and retrieval.
• Popular Open Source Project - Public GitHub project with 21,949 stars and 1,225 forks.
• Built in C - Implemented in C as a native PostgreSQL extension.
• Database-First Use - Use it through PostgreSQL rather than a separate SDK package.