USearch
Apache-2.0 fast similarity search across languages
Databases / Vector · Apache-2.0 · 4.3k
Reviewed 2026-09-06 · last push 2026-10-18 · repo checked 2026-10-19
What's Good
Apache-2.0. C++ core with Python/JS/Rust bindings. Exact and approximate search.
The Catch
Library, not a managed vector DB. You own persistence. Distinct from Chroma/Weaviate databases and sqlite-vec.
Verdict
Apache-2.0 embeddable similarity search. Free forever.
Embed
Maintainer? Add the badge to your README. It is free, links to this review, and there is no paid version.
Markdown
[](https://stackgems.com/gems/usearch)
HTML
<a href="https://stackgems.com/gems/usearch"><img src="https://stackgems.com/badge/usearch.svg" alt="USearch reviewed on Stack Gems" height="20"></a>