Annoy

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/spotify/annoy/blob/main/LICENSE recorded 2026-08-18

  LICENSE file is the verbatim Apache-2.0 text

• https://api.github.com/repos/spotify/annoy recorded 2026-08-18

  Repo metadata - license spdx_id Apache-2.0, private false, archived false, default branch main - for spotify/annoy.

• https://github.com/spotify/annoy/blob/main/README.rst recorded 2026-08-18

  README describes a C++ library with Python bindings searching for near points in space using read-only file-based structures that are mmapped so many processes share one index, with no paid tier, enterprise edition or license-key-gated build beside it.

1,232,630 PyPI downloads of `annoy` in the trailing 30 days, which lands in the 1M-10M band of the software usage scale, level 4.

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

  last_month downloads = 1,232,630 for annoy

Banded on the category feature matrix as single index family as a library. Placed two bands below the chroma 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/spotify/annoy/blob/main/README.rst recorded 2026-08-18

  README still documents a C++ library with Python bindings searching for near points in space using read-only file-based structures that are mmapped so many processes share one index.