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Repositories in this selection 12 · UTC 2026-11-05
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1—Qqdrant / qdrantQdrant - High-performance, massive-scale Vector Database and Vector Search Engine for the next generation of AI. Also available in the cloud https://cloud.qdrant.io/RustApache-2.0 · PermissiveInsufficient rank history35,3892,793——2026-11-02
2—Ppgvector / pgvectorOpen-source vector similarity search for PostgresCNOASSERTION · Restricted / unknownInsufficient rank history23,5691,379——2026-10-31
3—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
4—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
5—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
6—MMariaDB / serverMariaDB server is a community developed fork of MySQL server. Started by core members of the original MySQL team, MariaDB actively works with outside developers to deliver the most featureful, stable, and sanely licensed open SQL server in the industry.C++GPL-2.0 · Share derivative sourceInsufficient rank history8,5062,290——2026-11-02
7—Hhaifengl / smileStatistical Machine Intelligence & Learning EngineJavaNOASSERTION · Restricted / unknownInsufficient rank history6,4291,150——2026-11-03
8—Mmlpack / mlpackmlpack: a fast, header-only C++ machine learning libraryC++NOASSERTION · Restricted / unknownInsufficient rank history5,7211,730——2026-10-27
9—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
10—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
11—Ttensorchord / pgvecto.rsScalable, Low-latency and Hybrid-enabled Vector Search in Postgres. Revolutionize Vector Search, not Database.RustApache-2.0 · PermissiveInsufficient rank history2,19187——2025-02-26
12—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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