Open Source Microsoft Copilot AlternativesAI Chatbots & Large Language Model (LLM) Tools like Microsoft Copilot

The best open source alternative to Microsoft Copilot is Lumo by Proton. If that doesn't suit you, our users have ranked more than 100 alternatives to Microsoft Copilot and loads of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Microsoft Copilot are DeepSeek, Jan.ai, OpenClaw and Qwen.

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Microsoft Copilot alternatives are mainly AI Chatbots, but if you're looking for Large Language Model (LLM) Tools or AI Writing Tools you can filter on that. Other popular filters include Free, EU and Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Microsoft Copilot.
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Alternatives list

  1. Lumo by Proton icon
     86 likes

    Privacy-first AI assistant utilizing zero-access encryption and open-source code, ensuring no data logging, profiling, or training on chats, providing user-controlled, encrypted conversations, with compliance under GDPR and no sharing with third parties.

    103 Lumo by Proton alternatives

    Cost / License

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
     
  2. DeepSeek icon
     101 likes

    DeepSeek is a state-of-the-art AI assistant designed to provide intelligent, conversational support across diverse tasks. It leverages advanced natural language processing and machine learning to answer questions, generate creative content, solve complex problems, and offer...

    153 DeepSeek alternatives

    Cost / License

    • Freemium
    • Open Source (MIT)

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
     
  3. OpenClaw icon
     29 likes

    Personal AI assistant runs locally, supporting major chat platforms including WhatsApp, Telegram, Discord, iMessage, and more, with extension to Matrix and Zalo. Integrates speech and listening on macOS, iOS, and Android, plus offers a controllable live Canvas, prioritizing privacy.

    62 OpenClaw alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Self-Hosted
    • Docker
    • Node.JS
     
  4. Apertus icon
     22 likes

    As a fully open language model, Apertus allows researchers, professionals and enthusiasts to build upon the model and adapt it to their specific needs, as well as to inspect any part of the training process.

    Cost / License

    Platforms

    • Online
    • Self-Hosted
     
  5. Euria icon
     13 likes

    Confidential AI chat assistant delivering writing, summarization, voice transcription, email handling, and document search tools, all hosted exclusively in Switzerland with open source models, data sovereignty, and compliance with GDPR and FADP standards.

    64 Euria alternatives

    Cost / License

    Application types

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
     
  6. Open R1 icon
     12 likes

    Open R1 is a community-driven, open-source initiative aimed at replicating the advanced AI capabilities of DeepSeek-R1 through transparent methodologies.

    Cost / License

    Platforms

    • Self-Hosted
    • Python
     
12 of 59 Microsoft Copilot alternatives