USearch

license

Apache-2.0(OSI)

source

public

core-gated

ungated

Apache-2.0 license body confirmed. The repository is public and unarchived and builds the whole product, and the README describes no paid tier, enterprise edition or license-gated build beside it, so source is public and the core ungated.

• https://github.com/unum-cloud/USearch/blob/main/LICENSE recorded 2026-08-18

  LICENSE file is the verbatim Apache-2.0 text

• https://api.github.com/repos/unum-cloud/USearch recorded 2026-08-18

  Repo metadata - license spdx_id Apache-2.0, private false, archived false, default branch main - for unum-cloud/USearch.

• https://github.com/unum-cloud/USearch/blob/main/README.md recorded 2026-08-18

  README describes a single-file similarity search and clustering engine with spatial, binary, probabilistic and user-defined metrics, bindings for eleven languages, and support for Linux, macOS, Windows, iOS, Android, WebAssembly and SQLite, with no paid tier, enterprise edition or license-key-gated build beside it.

458,244 PyPI downloads of `usearch` in the trailing 30 days, which lands in the 100K-1M band of the software usage scale, level 3.

• https://pypistats.org/api/packages/usearch/recent recorded 2026-08-18

  last_month downloads = 458,244 for usearch

Banded on the category feature matrix as single-purpose store or index. Placed two bands below the vespa anchor, on a matrix that bands on how much of the persist-index-retrieve path a product provides itself, at what scale and over how many retrieval modes.

• https://github.com/unum-cloud/USearch/blob/main/README.md recorded 2026-08-18

  README still documents a single-file similarity search and clustering engine with spatial, binary, probabilistic and user-defined metrics, bindings for eleven languages, and support for Linux, macOS, Windows, iOS, Android, WebAssembly and SQLite.