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Guide · generated from live data

Open-source AI projects and open-weight models

We track 42 products in this group. By our measured-attention ranking the most visible are Model Context Protocol, Hugging Face Hub, Ollama; 5 list a free tier. This is a popularity ordering, not a quality verdict - see methodology.
  1. 1
    Model Context ProtocolAnthropicOpen source

    Open protocol for connecting AI applications to tools and data sources.

    Popularity #1Trend 7d +1%From — ★ 9.3KAgent frameworks · Orchestration & RAG
  2. 2
    Hugging Face HubHugging FaceOpen source

    The largest hub for open models, datasets and Spaces, plus Transformers.

    Popularity #2Trend 7d -38%From $9/mo Verified <24h★ 167KML platforms & hubs · Inference & hosting
  3. 3
    OllamaOllamaOpen source

    Run open models locally with a simple CLI and API.

    Popularity #5Trend 7d -4%From Free Not verified★ 182KLocal LLM runtimes
  4. 4
    LangChainLangChainOpen source

    Framework for LLM applications and agents; LangGraph for stateful agent workflows.

    Popularity #10Trend 7d +4%From — ★ 147KOrchestration & RAG · Agent frameworks
  5. 5
    QwenAlibaba (Qwen)Open source

    Alibaba's open-weight model family (text, coder, vision, audio, image).

    Popularity #11Trend 7d -11%From — ★ 28KOpen-weight models
  6. 6
    DeepSeekDeepSeekOpen source

    DeepSeek's free chat assistant and low-cost API, built on its open-weight models.

    Popularity #12Trend 7d -4%From Free Not verified★ 105KGeneral assistants · Coding · Open-weight models
  7. 7
    n8nn8nOpen source

    Fair-code workflow automation with native AI agent nodes.

    Popularity #14Trend 7d +3%From Free Not verified★ 206KAutomation · Agent frameworks
  8. 8
    WhisperOpenAIOpen source

    OpenAI's open-source speech recognition model.

    Popularity #18Trend 7d -4%From — ★ 110KVoice & speech · Meetings & transcription
  9. 9
    KimiMoonshot AIOpen source

    Moonshot AI's assistant and open-weight Kimi model family.

    Popularity #22Trend 7d -22%From — General assistants · Research · Open-weight models
  10. 10
    vLLMvLLM projectOpen source

    High-throughput, memory-efficient inference and serving engine for LLMs.

    Popularity #23Trend 7d +12%From — ★ 93KInference & hosting
  11. 11
    llama.cppggml.aiOpen source

    LLM inference in C/C++ with GGUF quantisation.

    Popularity #25Trend 7d +3%From — ★ 130KLocal LLM runtimes · Inference & hosting
  12. 12
    CrewAICrewAIOpen source

    Framework and platform for orchestrating role-playing multi-agent systems.

    Popularity #29Trend 7d -1%From — ★ 59KAgent frameworks · Automation
  13. 13
    GemmaGoogleOpen source

    Google DeepMind's lightweight open-weight models.

    Popularity #34Trend 7d +3%From — Open-weight models
  14. 14
    Vercel AI SDKVercelOpen source

    TypeScript toolkit for building AI applications and agents.

    Popularity #36Trend 7d +26%From — ★ 27KOrchestration & RAG · Agent frameworks
  15. 15
    NemotronNVIDIAOpen source

    NVIDIA's open models, datasets and recipes.

    Popularity #40Trend 7d —From — Open-weight models
  16. 16
    ComfyUIComfy OrgOpen source

    Node-based open-source interface for diffusion and generative media workflows.

    Popularity #45Trend 7d +16%From — ★ 135KImage generation · Video generation
  17. 17
    LlamaMetaOpen source

    Meta's family of open-weight language and multimodal models.

    Popularity #47Trend 7d +7%From — ★ 7.7KOpen-weight models
  18. 18
    Claude Agent SDKAnthropicOpen source

    Anthropic's SDK for building agents on the Claude Code harness.

    Popularity #51Trend 7d -2%From — Agent frameworks
  19. 19
    LangfuseLangfuseOpen source

    Open-source LLM engineering platform: tracing, evals and prompt management.

    Popularity #55Trend 7d +13%From — ★ 35KObservability & evals
  20. 20
    Stable DiffusionStability AIOpen source

    Stability AI's open-weight latent diffusion image models.

    Popularity #56Trend 7d -4%From — ★ 27KImage generation · Open-weight models
  21. 21
    OpenAI Agents SDKOpenAIOpen source

    Lightweight framework for multi-agent workflows with handoffs, guardrails and tracing.

    Popularity #59Trend 7d +17%From — ★ 30KAgent frameworks
  22. 22
    Open WebUIOpen WebUIOpen source

    Self-hosted AI interface for Ollama and OpenAI-compatible APIs.

    Popularity #64Trend 7d +3%From — ★ 154KLocal LLM runtimes · General assistants
  23. 23
    QdrantQdrantOpen source

    Open-source vector search engine written in Rust.

    Popularity #67Trend 7d +13%From — ★ 35KVector databases
  24. 24
    WeaviateWeaviateOpen source

    Open-source vector database.

    Popularity #68Trend 7d +11%From — ★ 17KVector databases
  25. 25
    opencodeSSTAgentOpen source

    Open-source AI coding agent for the terminal.

    Popularity #70Trend 7d +120%From — ★ 211KCoding agents
  26. 26
    Browser UseBrowser UseAgentOpen source

    Open-source library that makes websites accessible to AI agents.

    Popularity #72Trend 7d +15%From — ★ 117KBrowser & computer-use agents · Agent frameworks
  27. 27
    ChromaChromaOpen source

    Open-source embedding database.

    Popularity #73Trend 7d +2%From — ★ 29KVector databases
  28. 28
    GLMZ.ai (Zhipu AI)Open source

    Z.ai's open-weight GLM model family and API.

    Popularity #74Trend 7d -51%From — Open-weight models · Model APIs
  29. 29
    LlamaIndexLlamaIndexOpen source

    Data framework for RAG and document agents; LlamaParse for document parsing.

    Popularity #77Trend 7d -3%From — ★ 52KOrchestration & RAG · Document analysis
  30. 30
    FLUXBlack Forest LabsOpen source

    Black Forest Labs' text-to-image and image editing models (open and pro).

    Popularity #82Trend 7d -14%From — ★ 26KImage generation · Open-weight models
  31. 31
    Gemini CLIGoogleAgentOpen source

    Google's open-source AI agent for the terminal.

    Popularity #85Trend 7d +9%From Free Not verified★ 107KCoding agents · Coding
  32. 32
    AutoGenMicrosoftOpen source

    Microsoft's framework for multi-agent AI applications.

    Popularity #95Trend 7d -2%From — ★ 61KAgent frameworks
  33. 33
    AiderAider (independent project)AgentOpen source

    Open-source AI pair programming in the terminal.

    Popularity #96Trend 7d -8%From — ★ 49KCoding agents
  34. 34
    OpenHandsAll Hands AIAgentOpen source

    Open-source platform for autonomous software development agents.

    Popularity #100Trend 7d —From — ★ 89KCoding agents
  35. 35
    Mistral open modelsMistral AIOpen source

    Mistral AI's Apache-licensed open-weight models.

    Popularity #102Trend 7d —From — Open-weight models
  36. 36
    ClineCline Bot Inc.AgentOpen source

    Open-source autonomous coding agent extension for VS Code.

    Popularity #103Trend 7d —From — ★ 70KCoding agents
  37. 37
    gpt-ossOpenAIOpen source

    OpenAI's open-weight reasoning models.

    Popularity #105Trend 7d —From — ★ 20KOpen-weight models
  38. 38
    openpi (π0)Physical IntelligenceOpen source

    Physical Intelligence's open vision-language-action models for robots.

    Popularity #109Trend 7d —From — ★ 14KOpen-weight models
  39. 39
    ContinueContinueOpen source

    Open-source IDE extensions and CLI for custom AI code assistants.

    Popularity #125Trend 7d —From — ★ 36KCoding
  40. 40
    gooseBlock, Inc.AgentOpen source

    Open-source, extensible on-machine AI agent from Block.

    Popularity #137Trend 7d —From — ★ 55KCoding agents · General-purpose agents
  41. 41
    MiniMax modelsMiniMaxOpen source

    MiniMax's open-weight LLMs and Hailuo video models.

    Popularity #153Trend 7d —From — Open-weight models · Video generation
  42. 42
    PhiMicrosoftOpen source

    Microsoft's small language models.

    Popularity #154Trend 7d —From — Open-weight models