Best Open Source ChatGPT Alternatives

A customizable interface for AI that works offline, supporting Ollama and OpenAI-compatible APIs while adapting to your specific workflow needs.

LobeChat is an open-source AI chat platform that provides a customizable and feature-rich experience for interacting with AI assistants.

Use any LLM to chat with your documents, enhance your productivity, and run the latest state-of-the-art LLMs completely privately with no technical setup.

Powerful AI assistant supporting iOS, macOS, and Windows. Switch between multiple LLM models seamlessly with local data storage and personalized knowledge base.

A powerful, open-source AI chat interface that runs locally, offering privacy, customization, and seamless integration with your workflow.

Free, open source AI chat platform compatible with any AI provider. Offers a wide range of features, including agents, code interpreter, and multimodal capabilities.

An open-source personal AI application that helps you find answers, understand documents, and create new content with ease.

Leon is an AI-powered virtual assistant that lives on your server, automating tasks and managing your digital life with privacy and customization.

Open-source answer engine that dynamically generates UI components while providing AI-powered responses, combining conversational AI with interactive interfaces.

Cross-platform desktop AI assistant supporting multiple providers, local knowledge base, and custom prompts. Integrates MCP protocol for enhanced AI tool capabilities.

A mobile app for interacting with private, local large language models that work offline and are optimized for Apple silicon.

Open-source chat application that lets you interact with multiple AI models in one interface, offering flexible conversations and diverse capabilities.

Privacy-focused open-source platform offering deep research capabilities, multi-model support, and customizable AI workflows for enhanced productivity.

A production-ready, privacy-focused AI chat application delivering AI capabilities through a dual-tier subscription system. Built with modern web technologies and a privacy-first architecture.