hybrid-search

A local SQLite-based memory database for AI agents with graph memory, hybrid search, and a tamper-evident thought/edge journal.

An offline hybrid retrieval engine for RAG that runs on-device, including phones. The repo shows BM25 plus dense retrieval, cross-encoder reranking, sparse expansion support, and bindings for Rust, Python, Swift, and Kotlin.

Polygres is a Postgres platform built for agent and retrieval workloads, combining hosted PostgreSQL with native graph traversal, HNSW vector search, and hybrid retrieval APIs. The page shows a working product site, SDK usage, API/runtime connection details, and example hybrid queries.