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Repositories in this selection 9 · UTC 2026-11-05
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1—Ppgvector / pgvectorOpen-source vector similarity search for PostgresCNOASSERTION · Restricted / unknownInsufficient rank history23,5691,379——2026-10-31
2—Wweaviate / weaviateWeaviate is an open-source vector database that stores both objects and vectors, allowing for the combination of vector search with structured filtering with the fault tolerance and scalability of a cloud-native database.GoNOASSERTION · Restricted / unknownInsufficient rank history16,9341,433——2026-11-02
3—Sspotify / annoyApproximate Nearest Neighbors in C++/Python optimized for memory usage and loading/saving to diskC++Apache-2.0 · PermissiveInsufficient rank history14,3291,231——2025-10-29
4—Llancedb / lancedbDeveloper-friendly OSS embedded retrieval library for multimodal AI. Search More; Manage Less.RustApache-2.0 · PermissiveInsufficient rank history11,8311,150——2026-11-02
5—Ppostgresml / postgresmlPostgres with GPUs for ML/AI apps.RustMIT · PermissiveInsufficient rank history6,827363——2025-07-01
6—Mmicrosoft / SPTAGA distributed approximate nearest neighborhood search (ANN) library which provides a high quality vector index build, search and distributed online serving toolkits for large scale vector search scenario.C++MIT · PermissiveInsufficient rank history5,022624——2026-11-03
7—Iinfiniflow / infinityThe AI-native database built for LLM applications, providing incredibly fast hybrid search of dense vector, sparse vector, tensor (multi-vector), and full-text.C++Apache-2.0 · PermissiveInsufficient rank history4,755458——2026-11-02
8—Uunum-cloud / USearchFast Open-Source Search & Clustering engine × for Vectors & Arbitrary Objects × in C++, C, Python, JavaScript, Rust, Java, Objective-C, Swift, C#, GoLang, and Wolfram 🔍C++Apache-2.0 · PermissiveInsufficient rank history4,368370——2026-10-31
9—NNGT-labs / NGTNearest Neighbor Search with Neighborhood Graph and Tree for High-dimensional DataC++Apache-2.0 · PermissiveInsufficient rank history1,377133——2026-10-30
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