Open source for data and AI

Projects749Relicensed100

749 projects · 100 relicensed

annoy license, foundation and stars

Search and vector · Apache 2.0 (open source) · 14,333 stars

GitHub

Approximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to disk

License history

LICENSE file

Apache 2.0 No license change recorded since the repository was created in 2013.

Latest release

v1.17.2 published Apr 10, 2023

More in search and vector

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ProjectStars
ElasticsearchFree and Open Source, Distributed, RESTful Search Engine.ElasticAGPL v3 or SSPL or ELv278.5k
MeilisearchA lightning-fast search engine API bringing AI-powered hybrid search to your sites and applications.MeilisearchMIT for most code, Business Source License 1.1 for Enterprise Edition parts59.8k
MilvusMilvus is a high-performance, cloud-native vector database built for scalable vector ANN search.LF AI & DataApache 2.046.6k
QdrantQdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI.QdrantApache 2.035.4k
chromaSearch infrastructure for AI.Apache 2.029.7k
typesenseOpen Source alternative to Algolia + Pinecone and an Easier-to-Use alternative to ElasticSearch Fast, typo tolerant, in-memory fuzzy Search Engine for building delightful search experiences.GPL v327.1k
pgvectorOpen-source vector similarity search for Postgres.Custom or mixed (see the LICENSE file)23.6k
sonicFast, lightweight & schema-less search backend.MPL 2.021.4k
About and history
Repository
spotify/annoy · created Apr 1, 2013
Language
C++
Foundation
None; run by its maintainers
GitHub detects
Apache-2.0
Stars per week
5 (GitHub weekly snapshots)

Weekly snapshots

Week ofStars
Nov 2, 202614,333
Oct 26, 202614,324
Oct 19, 202614,319
Oct 5, 202614,314
Sep 21, 202614,305

Changes

Stars per weekNov 7, 2026

Gains about 5 stars a week, up from 4.

Stars per weekOct 19, 2026

Gains about 4 stars a week, down from 5.

Stars per weekOct 10, 2026

Gains about 5 stars a week.

ReleaseSep 25, 2026

Latest release on GitHub: v1.17.2.

TrackedSep 25, 2026

Now tracked, from spotify/annoy on GitHub.