LanceDB

Open-source embedded vector database built on the Lance columnar format, storing vectors and data on local disk or object storage, with a managed cloud.

Visit lancedb.com ↗Alternatives

Works with AI agents:llms.txt

Ask your AI about this, with this page as the source:ChatGPT ↗Claude ↗Perplexity ↗

Where it fits

Vector Database · Embedded / local-firstAn embedded vector database that stores vectors and data as files on local disk or object storage, with no server to run.Trade-off: Many concurrent writers need care, and the managed cloud is a separate paid product.

How LanceDB itself is built

1 tools, from its own code, website and Product Hunt page.

Clerk

Who uses it

3 makers' products, each linked to the source that shows it, and 39 open-source projects that declare it in their code.

Customer story 3Declared in code 39How evidence is collected →

Sort

cogneeMemory for AI Agents in 6 lines of codeVector DatabaseCustomer story · source ↗

CodeRabbitAI code review service that reviews every pull request on GitHub, GitLab, Bitbucket or A…Vector DatabaseCustomer story · source ↗

Meet DosuShared knowledge makes agents faster and more reliableVector DatabaseCustomer story · source ↗

ai-agents-frameworks The ultimate playground to learn, experiment with, and compare modern open-source AI age…Vector DatabaseIn its code · source ↗

atom Atom Agent, Open-Source Governed AI Agent Platform for Self-Hosted AutomationVector DatabaseIn its code · source ↗

awesome-llm-apps 100+ AI Agents, Agent Skills and RAG Apps - Free and Open Source.Vector DatabaseIn its code · source ↗

JamAIBase The collaborative spreadsheet for AI. Chain cells into powerful pipelines, experiment wi…Vector DatabaseIn its code · source ↗

mirage The World's First Virtual Terminal for AI AgentsVector DatabaseIn its code · source ↗

openllmetry Open-source observability for your GenAI or LLM application, based on OpenTelemetryVector DatabaseIn its code · source ↗

public The database IDE for VS Code, Cursor, and Windsurf. 80+ databases: Postgres, MySQL, SQL…Vector DatabaseIn its code · source ↗

refly The first open-source agent skills builder. Define skills by vibe workflow, run on Claud…Vector DatabaseIn its code · source ↗

continue open-source coding agentVector DatabaseIn its code · source ↗

monitor Real-time monitoring, slowlog analysis, and audit trails for Valkey and RedisVector DatabaseIn its code · source ↗

CrewAI Python framework for orchestrating role-based teams of autonomous AI agents (Crews) plus…Vector DatabaseIn its code · source ↗

LlamaIndex Data framework for connecting, indexing, and querying your data to build LLM and RAG app…Vector DatabaseIn its code · source ↗

Mastra TypeScript framework for building AI agents, workflows, and RAG applications with memory…Vector DatabaseIn its code · source ↗

aider-desk Platform for AI-powered software engineersVector DatabaseIn its code · source ↗

AdalFlow AdalFlow: The library to build & auto-optimize LLM applications.Vector DatabaseIn its code · source ↗

app-controller App-Controller: Allow users to manipulate your App with natural languageVector DatabaseIn its code · source ↗

Kiln Build, Evaluate, and Optimize AI Systems. Includes evals, RAG, agents, fine-tuning, synt…Vector DatabaseIn its code · source ↗

Datus-agent The Future of Data Engineering — A CLI SQL client for the modern data stack, enabling AI…Vector DatabaseIn its code · source ↗

m_flow A bio-inspired cognitive memory engine — a new paradigm for Graph RAG.Vector DatabaseIn its code · source ↗

openclaw The AI that really does things. Any OS. Any Platform. The lobster way. 🦞Vector DatabaseIn its code · source ↗

Open source: a project that declares LanceDB as a dependency in its public code — verifiable, but not necessarily a live product.

Alternatives to LanceDB

All alternatives by situation →

QdrantHeavy metadata filtering alongside vector search, self-hosted from one binary or on its managed cloud.Open sourceFree tier18 makers · vector database Compare with LanceDB →

turbopufferVery large or many-tenant indexes where storing everything on object storage keeps cost down.8 makers · vector database Compare with LanceDB →

pgvectorApps already on Postgres that want vector search in the same database, joined with normal tables.Open sourceFree tier

ChromaPrototyping RAG on your laptop with a pip or npm install and no server to run.Open sourceFree tier13 makers · vector database

PineconeA fully hosted index with nothing to operate, sized by usage.Free tier55 makers · vector database

WeaviateHybrid search that mixes keyword and vector results, with built-in modules that can create embeddings for you.Open sourceFree tier16 makers · vector database

MongoDBApps already on MongoDB Atlas that want vector search on the same documents, with no second store to sync.Self-hostableFree tier

MilvusVery large collections — hundreds of millions of vectors and up — on a distributed open-source database, or managed as Zilliz Cloud.Open sourceFree tier

Questions makers ask about LanceDB

Is LanceDB free?

Yes — it is free, open-source software.

Is LanceDB open source or self-hostable?

Open source, and you can self-host it. source ↗

Can AI coding agents work with LanceDB?

It serves an llms.txt docs index.

Who uses LanceDB?

3 makers' products we track, each with a source, and 39 open-source projects declare it in their code. source ↗