mentedb

A cognition aware database engine for AI agent memory. Purpose built in Rust with WAL, HNSW, knowledge graphs, and speculative context pre assembly. Not a wrapper, a ground up storage engine that thinks. Maintained by nambok on GitHub, where it has earned 106 stars from the community.

It's actively developed around agent-memory, ai, ai-agents, and is a solid reference for anyone building with these tools.