GitHub stars · StarDay

1Tencent / WeKnoraOpen-source LLM knowledge platform: turn raw documents into a queryable RAG, an autonomous reasoning agent, and a self-maintaining Wiki.GoLicense not declared36,687

2qdrant / 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 · Permissive35,447

3onyx-dot-app / onyxOpen Source AI Platform - AI Chat with advanced features that works with every LLMPythonLicense not declared33,254

4dragonflydb / dragonflyA modern replacement for Redis and MemcachedC++License not declared31,847

5TencentCloud / TencentDB-Agent-MemoryTencentDB Agent Memory is a team-level memory hub for AI Agents — turning conversations, docs, and code into four reusable memory assets (Chat Memory, Skill, LLM-Wiki, Code-Graph) that are governed, shared, and equipped across agents and frameworks.TypeScriptLicense not declared30,583

6typesense / 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 experiencesC++GPL-3.0 · Share derivative source27,099

7xerj-org / xerjAI search engine and MCP server for bots and agents. One Rust binary indexes code, docs, logs, JSONL/CSV and PDFs for BM25 full-text, vector and hybrid search, code search without grep, agent memory and RAG. Elasticsearch-compatible API; Corpus Hub serves hundreds of reference memory corpora.RustApache-2.0 · Permissive18,467

8RyanCodrai / turbovecA vector index built on TurboQuant, written in Rust with Python bindingsRustMIT · Permissive17,470

9weaviate / 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.GoLicense not declared16,940

10StarTrail-org / LEANNAuthor description: [MLsys2026 Best Paper]: https://arxiv.org/abs/2506.08276. RAG on Everything with LEANN. Enjoy 97% storage savings while running a fast, accurate, and 100% private RAG application on your personal device.PythonMIT · Permissive13,776

11neuml / txtai💡 All-in-one AI framework for semantic search, LLM orchestration and language model workflowsPythonApache-2.0 · Permissive13,065

12voxel51 / fiftyoneRefine high-quality datasets and visual AI modelsTypeScriptApache-2.0 · Permissive11,281

13oramasearch / orama🌌 A complete search engine and RAG pipeline in your browser, server or edge network with support for full-text, vector, and hybrid search in less than 2kb.TypeScriptLicense not declared10,602

14oceanbase / oceanbaseOceanBase is the unified distributed database for the AI era — open-source, multi-model, one engine for your most demanding workloads.C++Apache-2.0 · Permissive10,366

15databendlabs / databendData Agent Ready Warehouse : One for Analytics, Search, AI, Python Sandbox. — rebuilt from scratch. Unified architecture on your S3.RustApache-2.0 · Permissive9,492

16zilliztech / GPTCacheSemantic cache for LLMs. Fully integrated with LangChain and llama_index.PythonMIT · Permissive8,220

17vespa-engine / vespaThe AI search platformJavaApache-2.0 · Permissive7,163

18vcaesar / riotGo Open Source, Distributed, Simple and efficient text/vector Search EngineGoApache-2.0 · Permissive6,064

19superduper-io / superduperSuperduper: End-to-end framework for building custom AI applications and agents.PythonApache-2.0 · Permissive5,330

20microsoft / 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 · Permissive5,021