function: vector-database
216 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| supervc-stack/VectorChord VectorChord is a PostgreSQL extension written in Rust for scalable, disk-efficient vector similarity search, serving as the successor to pg… | 79 | 1785 | active |
| datastax/jvector JVector is an embedded approximate nearest neighbor (ANN) search engine for the JVM, implementing a graph index that merges HNSW's hierarch… | 89 | 1741 | active |
| vdaas/vald Vald is a highly scalable, distributed approximate nearest neighbor (ANN) dense vector search engine built on cloud-native architecture and… | 91 | 1718 | active |
| dingodb/dingo DingoDB is an open-source distributed multi-modal vector database that combines relational (SQL) and vector semantics in a unified platform… | 64 | 1701 | active |
| RediSearch/RediSearch RediSearch is a Redis module providing a query and indexing engine with secondary indexing, full-text search, vector similarity search, geo… | 96 | 6218 | maintenance |
| xerj-org/xerj XERJ is a Rust-based, single-binary search engine built for AI agents, offering BM25, kNN vector, and hybrid search with Elasticsearch-comp… | 76 | 1670 | active |
| LadybugDB/ladybug Ladybug is an embedded, serverless graph database (a community successor to Kuzu) written in C++, using a property graph data model and the… | 83 | 1668 | active |
| spotify/voyager Voyager is an in-memory approximate nearest-neighbor search library implementing the HNSW algorithm, with bindings for Python and Java (and… | 55 | 1591 | stable |
| tickernelz/opencode-mem An OpenCode plugin that gives AI coding agents persistent memory across sessions using an embedded local Turso/libSQL vector database. It a… | 82 | 1528 | active |
| memfreeme/memfree MemFree is an open-source hybrid AI search engine that answers questions using both your personal knowledge base and the web, integrating m… | 65 | 1506 | active |
| tjmlabs/ColiVara ColiVara is a hosted (and self-hostable) retrieval API that stores, searches, and retrieves documents using visual embeddings generated by … | 65 | 1486 | active |
| postgresml/korvus Korvus is an open-source search SDK that unifies the entire RAG pipeline—embedding generation, vector search, reranking, summarization, and… | 25 | 1472 | active |
| datalevin/datalevin Datalevin is a durable Datalog database built on LMDB that unifies relational, graph, document, key-value, full-text, and vector search in … | 98 | 1470 | active |
| vercel-labs/book-inventory A Next.js book inventory application with search and filtering over a PostgreSQL database containing over 2 million Goodreads books. It use… | 10 | 1423 | active |
| NGT-labs/NGT NGT is a C++ library and command-line tool from Yahoo Japan for high-speed approximate nearest neighbor search on high-dimensional vector d… | 90 | 1370 | active |
| infinispan/infinispan Infinispan is an open-source, distributed in-memory key/value data grid and NoSQL cloud data store written in Java. It supports embedded an… | 94 | 1347 | stable |
| ClaudioDrews/memory-os Memory OS is a seven-layer persistent memory system for the Hermes Agent, combining Qdrant vector search, structured facts with trust scori… | 52 | 1338 | active |
| via007/bilibili-rag A self-hosted RAG application that turns a Bilibili user's favorited videos into a searchable, conversational knowledge base. It pulls favo… | 76 | 1306 | active |
| apecloud/ApeRAG ApeRAG is a production-ready RAG platform combining Graph RAG, vector search, and full-text search with AI agents and MCP support. It offer… | 55 | 1306 | active |
| kantord/SeaGOAT SeaGOAT is a local-first semantic code search engine that uses vector embeddings to let developers search their codebase with natural langu… | 72 | 1304 | active |
| endee-io/endee Endee is a high-performance C++ vector database designed to handle up to 1B vectors on a single node, supporting dense, sparse (BM25), and … | 76 | 1303 | active |
| P0luz/Ombre-Brain Ombre Brain is a long-term emotional memory system for Claude and other MCP clients, exposing 16 MCP tools over a single /mcp connector. Me… | 79 | 1262 | active |
| supavec/supavec Supavec is an open-source RAG-as-a-Service platform (an alternative to Carbon.ai) that lets developers upload documents, generate embedding… | 48 | 1233 | active |
| stoolap/stoolap Stoolap is a modern embedded SQL database written in pure Rust, offering ACID transactions with MVCC, a cost-based query optimizer, paralle… | 76 | 1210 | active |
| mem9-ai/mem9 mem9 is a persistent memory layer for AI agents, providing cross-session and cross-machine memory, shared memory for multi-agent workflows,… | 59 | 1201 | active |
| superlinear-ai/raglite RAGLite is a Python toolkit for building Retrieval-Augmented Generation (RAG) pipelines backed by DuckDB or PostgreSQL, with hybrid keyword… | 85 | 1198 | active |
| zilliztech/VectorDBBench VectorDBBench (VDBBench) is an open-source Python benchmark tool for comparing the performance and cost-effectiveness of vector databases a… | 91 | 1166 | active |
| LycheeMem/LycheeMem LycheeMem is a lightweight long-term memory framework for LLM agents, combining working session context, a compact semantic memory store (S… | 58 | 1155 | active |
| ArcadeData/arcadedb ArcadeDB is an open-source, Apache 2.0 licensed multi-model DBMS written in Java that natively stores graphs, documents, key-value pairs, f… | 99 | 1122 | active |
| sqliteai/sqlite-vector SQLite-Vector is a cross-platform SQLite extension written in C that adds vector search capabilities to embedded SQLite databases, with SIM… | 86 | 1100 | active |
| joaoh82/rust_sqlite SQLRite is an embedded SQL database engine written from scratch in Rust, modeled on SQLite with a paged single-file format, B-tree storage,… | 90 | 1091 | active |
| GanymedeNil/document.ai A universal local knowledge base solution that stores documents as vectors in a vector database and uses GPT3.5 to generate answers from re… | 30 | 3670 | maintenance |
| myscale/MyScaleDB MyScaleDB is a SQL vector database built as a fork of ClickHouse, adding high-performance vector search and full-text search to a proven OL… | 25 | 1039 | active |
| wxywb/history_rag A Chinese history question-answering application built with RAG (retrieval-augmented generation) over a corpus of Chinese historical texts,… | 26 | 1038 | active |
| Evokoa/pgGraph pgGraph is a PostgreSQL extension (built with pgrx in Rust) that adds graph database capabilities—graph search, traversal, and shortest-pat… | 80 | 1014 | active |
| Mintplex-Labs/vector-admin VectorAdmin is a self-hostable web UI and tool suite for managing vector databases like Pinecone, Chroma, Qdrant, and Weaviate. It provides… | 10 | 2244 | maintenance |
| tensorchord/pgvecto.rs pgvecto.rs is a Postgres extension written in Rust (via pgrx) that adds vector similarity search with high dimension support, quantization,… | 24 | 2183 | maintenance |
| asg017/sqlite-vss sqlite-vss is a SQLite extension written in C++ that adds vector similarity search to SQLite using Faiss, via vss0 virtual tables and a vss… | 22 | 1998 | maintenance |
| all-in-aigc/gpts-works GPTs Works is a third-party GPTs store consisting of a website for browsing and discovering custom ChatGPT GPTs, a vector-based index syste… | 23 | 1633 | maintenance |
| finic-ai/rag-stack RAGstack is a self-hostable private ChatGPT alternative that deploys open-source LLMs (Llama 2, Falcon, GPT4All) alongside the Qdrant vecto… | 29 | 1586 | maintenance |
| CaviraOSS/OpenMemory OpenMemory is a local-first, self-hosted cognitive memory engine that gives LLM applications and AI agents persistent long-term memory, wit… | 70 | 4466 | experimental |
| jdagdelen/hyperDB HyperDB is a lightweight, local vector database library for Python with a C++/MKL-accelerated backend, designed to store and query document… | 23 | 1406 | experimental |
| niledatabase/niledatabase Nile is a Postgres platform re-engineered for multi-tenant B2B applications, decoupling storage from compute and virtualizing tenants withi… | 60 | 1076 | experimental |
| tantaraio/voy Voy is a tiny vector similarity search engine written in Rust and compiled to WebAssembly, using a k-d tree index for fast nearest-neighbor… | 31 | 1070 | experimental |
| philippgille/chromem-go chromem-go is an embeddable vector database for Go with a Chroma-like interface and zero third-party dependencies. It runs in-memory with o… | 54 | 1048 | experimental |
| timescale/pgai pgai is a Python library and set of PostgreSQL tools from Timescale that turns PostgreSQL into a retrieval engine for RAG and agentic appli… | 10 | 5806 | abandoned |
| erikbern/ann-benchmarks A benchmarking environment for approximate nearest neighbor (ANN) search algorithms, with pre-generated HDF5 datasets and Docker containers… | 73 | 5717 | abandoned |
| marqo-ai/marqo Marqo is an AI-native ecommerce search and product discovery platform offering semantic search, personalization, recommendations, and merch… | 86 | 5027 | abandoned |
| kuzudb/kuzu Kuzu is an embedded, serverless property graph database written in C++ that implements the Cypher query language and is optimized for fast … | 10 | 4026 | abandoned |
| pinecone-io/canopy Canopy is an open-source Retrieval Augmented Generation (RAG) framework and context engine built on top of the Pinecone vector database, pr… | 10 | 1031 | abandoned |
| Supabase Supabase is an open-source Postgres development platform that bundles a hosted (or self-hosted) Postgres database with authentication, auto… | 98 | 108441 | stable |
| Redis Redis is an open-source, in-memory data structure server written in C that doubles as a cache, NoSQL data store, message broker, and docume… | 95 | 76114 | stable |
| Mintplex-Labs/anything-llm AnythingLLM is an all-in-one, local-first AI application for chatting with your documents, running AI agents, and building workflows entire… | 95 | 65257 | active |
| mem0ai/mem0 Mem0 is a memory layer for AI agents and LLM applications that extracts, stores, and retrieves persistent user context across sessions. It … | 92 | 64121 | active |
| LlamaIndex LlamaIndex is a Python (with a TypeScript variant) framework for building LLM-powered applications, centered on ingesting, indexing, and qu… | 95 | 51883 | stable |
| QuivrHQ/quivr Quivr is an opinionated RAG (Retrieval-Augmented Generation) library, available as the quivr-core Python package, that lets developers inge… | 45 | 39423 | active |
| dragonflydb/dragonfly Dragonfly is a modern in-memory data store that is fully API-compatible with Redis and Memcached, built on a multi-threaded, shared-nothing… | 98 | 31043 | active |
| Supermemory Supermemory is a memory and context engine for AI applications and agents, offering a hosted Memory API plus a self-hostable stack that ext… | 92 | 29089 | active |
| deepset-ai/haystack Haystack is an open-source Python AI orchestration framework by deepset for building production-ready LLM applications, agents, and RAG sys… | 99 | 26325 | stable |
| pubkey/rxdb RxDB is a local-first, reactive NoSQL database for JavaScript applications that runs in browsers, mobile apps, desktop apps, and servers. I… | 99 | 23368 | active |
| Tencent/WeKnora WeKnora is an open-source, LLM-powered knowledge platform by Tencent that turns raw documents into a queryable RAG system, an autonomous Re… | 84 | 20700 | active |
| geldata/gel Gel is an open-source graph-relational database built on top of Postgres, combining a strict object-type schema, the EdgeQL query language,… | 61 | 14171 | active |
| netease-youdao/QAnything QAnything is a local knowledge base question-answering system by NetEase Youdao that supports uploading and querying various document forma… | 22 | 14078 | active |
| zilliztech/claude-context Claude Context is an MCP plugin that adds semantic code search to Claude Code and other AI coding agents, indexing an entire codebase into … | 60 | 12447 | active |
| hangwin/mcp-chrome A Chrome extension that acts as a Model Context Protocol (MCP) server, exposing your real Chrome browser—its tabs, login states, and config… | 56 | 12352 | active |
| h2oai/h2ogpt h2oGPT is an Apache-2.0 open-source application for chatting with local, private LLMs and querying/summarizing your own documents (PDFs, Wo… | 10 | 11969 | active |
| cocoindex-io/cocoindex CocoIndex is an open-source incremental data framework for AI, with a Rust engine and a declarative Python API that keeps sources (files, S… | 82 | 11409 | active |
| voxel51/fiftyone FiftyOne is an open-source Python library and GUI app for building high-quality computer vision datasets and models. It enables visualizing… | 99 | 11042 | active |
| a16z-infra/ai-town AI Town is a deployable starter kit for building a virtual town where AI characters live, chat, and socialize, inspired by the Generative A… | 73 | 10392 | active |
| ogx-ai/ogx OGX (formerly Llama Stack) is an open-source, OpenAI-compatible agentic API server and Python library that bundles inference, vector stores… | 86 | 8416 | active |
| feast-dev/feast Feast is an open-source feature store for machine learning that manages offline stores for historical training data and low-latency online … | 99 | 7230 | stable |
| rocketride-org/rocketride-server RocketRide is an open-source AI pipeline engine with a high-throughput C++ runtime and 100+ Python-extensible nodes for building, debugging… | 80 | 7090 | active |
| aidlearning/AidLearning-FrameWork AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling… | 70 | 5797 | active |
| ageerle/ruoyi-ai RuoYi AI is an open-source, enterprise-grade full-stack AI assistant platform built in Java on the RuoYi ecosystem and LangChain4j. It unif… | 91 | 5666 | active |
| docker/genai-stack A Docker Compose-based starter stack for building GenAI applications, combining LangChain, Ollama for local LLM inference, and Neo4j as a d… | 71 | 5397 | active |
| superduper-io/superduper Superduper is an open-source Python framework for building database-integrated AI applications and agents, connecting models, embeddings, a… | 49 | 5316 | active |
| groupultra/telegram-search A self-hostable tool that exports, backs up, and indexes Telegram chat history into a database (PGlite or PostgreSQL) with tokenization and… | 83 | 4078 | active |
| mayooear/ai-pdf-chatbot-langchain A monorepo template for an AI PDF chatbot agent that ingests PDFs, stores embeddings in Supabase, and answers questions using OpenAI via La… | 10 | 16598 | maintenance |
| pipeshub-ai/pipeshub-ai PipesHub is an open-source, self-hostable AI workplace platform that unifies business data from apps like Slack, Gmail, Drive, and Notion i… | 87 | 3692 | active |
| sugarforever/chat-ollama ChatOllama is an open-source, self-hosted AI chatbot platform built with Nuxt 3 that supports multiple LLM providers (OpenAI, Anthropic, Ge… | 63 | 3509 | active |
| rag-web-ui/rag-web-ui RAG Web UI is a self-hosted intelligent dialogue application that builds Q&A systems over your own knowledge base using Retrieval-Augmented… | 70 | 3270 | active |
| lakesoul-io/LakeSoul LakeSoul is a cloud-native, real-time lakehouse framework with a Rust-native core providing ACID table format, concurrent upserts, incremen… | 82 | 3247 | active |
| spiceai/spiceai Spice.ai OSS is a portable Rust runtime (~140 MB binary) that combines federated SQL querying, accelerated data materialization, full-text … | 95 | 3070 | active |
| hegelai/prompttools PromptTools is an open-source Python library for testing, experimenting with, and evaluating prompts, LLMs (OpenAI, Anthropic, LLaMA, etc.)… | 50 | 3051 | active |
| trustgraph-ai/trustgraph TrustGraph is an open-source context interoperability layer that builds unified semantic context layers using hypergraphs, knowledge graphs… | 68 | 2616 | active |
| lioensky/VCPToolBox VCPToolBox is a Node.js middleware layer deployed between LLM APIs and frontend applications, providing a unified Variable & Command Protoc… | 79 | 2265 | active |
| learnhouse/learnhouse LearnHouse is a next-generation open-source learning management system (LMS) for creating, sharing, and selling educational content. It com… | 99 | 2203 | active |
| deepsense-ai/ragbits Ragbits is a Python framework of modular building blocks for rapidly developing generative AI applications, covering LLM interaction, promp… | 75 | 1668 | active |
| a16z-infra/companion-app A tutorial starter stack for building and hosting AI companions with personality, backstory, and conversational memory. It combines Next.js… | 29 | 5977 | maintenance |
| pixeltable/pixeltable Pixeltable is a Python library providing declarative, incremental data infrastructure for multimodal AI applications, unifying storage of i… | 92 | 1613 | active |
| KruxAI/ragbuilder RagBuilder is a Python toolkit that automatically builds an optimal, production-ready Retrieval-Augmented Generation (RAG) pipeline for you… | 35 | 1541 | active |
| GitHamza0206/simba Simba is an open-source, production-ready customer service assistant and knowledge management system built around a fully customizable RAG … | 62 | 1538 | active |
| DemonDamon/FinnewsHunter FinnewsHunter is a multi-agent financial intelligence platform built on the AgenticX framework that monitors Chinese financial news sources… | 73 | 1487 | active |
| Open-Source-Legal/OpenContracts OpenContracts is a self-hosted, MIT-licensed document intelligence platform that turns document repositories into a programmable citation g… | 94 | 1451 | active |
| opencx-labs/OpenChat OpenChat is a self-hosted chatbot console that lets everyday users create and manage unlimited custom chatbots powered by GPT-3/GPT-4 with … | 10 | 5237 | maintenance |
| Nutlope/pdftochat PDFToChat is an open-source Next.js web application that lets users upload PDFs and chat with them using AI. It uses Together AI's Mixtral … | 68 | 1441 | active |
| aws-samples/aws-genai-llm-chatbot A modular, production-ready AWS solution for deploying a multi-LLM, multi-RAG powered chatbot using AWS CDK. It supports Amazon Bedrock, Sa… | 60 | 1400 | active |
| arkohut/pensieve Pensieve is a privacy-focused passive screen recording application that automatically takes screenshots of your screens, indexes them with … | 85 | 1386 | active |
| StarlightSearch/EmbedAnything EmbedAnything is a high-performance, memory-safe embedding pipeline written in Rust (with Python bindings) that generates embeddings from t… | 88 | 1305 | active |
| logicalclocks/hopsworks Hopsworks is an open-source, data-intensive AI platform (an 'AI Lakehouse') built around a Python-centric Feature Store with online/offline… | 26 | 1303 | active |