ChatGPT AlternativesOnly Open Source apps categorised as AI Writing Tools

The best open source AI Writing alternative to ChatGPT is Lumo by Proton. If that doesn't suit you, our users have ranked more than 100 alternatives to ChatGPT and many of them are open source AI Writing Tools so hopefully you can find a suitable replacement. Other interesting open source AI Writing Tool alternatives to ChatGPT are DeepSeek, Qwen, AnythingLLM and Alpaca - Ollama Client.

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Most ChatGPT alternatives are AI Writing Tools, but you can also narrow the list to AI Chatbots or Large Language Model (LLM) Tools. Other popular filters are Free, Open Source, Android, Online and Grammar Check. You can also filter for EU-based alternatives if you prefer software from the European Union.
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Alternatives
ChatGPT alternatives page was last updated

Alternatives list

  1. Lumo by Proton icon
     206 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.

    162 Lumo by Proton alternatives

    Cost / License

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    • OpenAPK
    Good alternative?
     
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  2. DeepSeek icon
     261 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...

    262 DeepSeek alternatives

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    Good alternative?
     
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    4
  3. Qwen icon
     85 likes

    Qwen.com is an interface to chat with Alibaba Qwen's Qwen series of models which are renowned for their huge context windows, generous free usage limits, reliability, and their continued tradition of being open-source.

    166 Qwen alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • Self-Hosted
    Good alternative?
     
  4. AnythingLLM icon
     75 likes

    Open-source privacy-focused chatbot platform allowing unlimited document uploads, multi-user and single-user modes, AI-powered chat with documents, vector database and LLM compatibility, customizable interface, message history, secure desktop deployment, and full user controls.

    267 AnythingLLM alternatives

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Docker
    Good alternative?
     
  5. Alpaca is an Ollama client where you can manage and chat with multiple models, Alpaca provides an easy and begginer friendly way of interacting with local AI.

    206 Alpaca - Ollama Client alternatives

    Cost / License

    Application type

    Platforms

    • Linux
    • Flathub
    • Flatpak
    • Linux Mobile
    Good alternative?
     
  6. Euria icon
     33 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.

    Cost / License

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Software as a Service (SaaS)
    Good alternative?
     
  7. Apertus icon
     32 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

    Application type

    Platforms

    • Online
    • Self-Hosted
    Good alternative?
     
  8. Ollama App icon
     35 likes

    A modern and easy-to-use client for Ollama.

    Cost / License

    Application type

    Alerts

    • Discontinued

    Platforms

    • Windows
    • Linux
    • Android
    • F-Droid
    Good alternative?
     
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  9. Google Gemma icon
     34 likes

    A family of lightweight, state-of-the art open models built from the same research and technology that we used to create the Gemini models.

    Cost / License

    Application type

    Platforms

    • Windows
    Good alternative?
     
  10. Meta Llama icon
     39 likes

    As part of Meta’s commitment to open science, today we are publicly releasing Llama (Large Language Model Meta AI), a state-of-the-art foundational large language model designed to help researchers advance their work in this subfield of AI.

    287 Meta Llama alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • BSD
    • Self-Hosted
    Good alternative?
     
  11. Khoj icon
     49 likes

    Open-source app offers local or cloud AI chat with major LLMs, advanced semantic search, automation, personal newsletters, document indexing, image generation, and text-to-speech. Access from web, Obsidian, Emacs, desktop, mobile, or messaging platforms.

    50 Khoj alternatives

    Cost / License

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Self-Hosted
    • Python
    • Homebrew
    • Docker
    Good alternative?
     
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