Best Open Source Alternatives to ChatGPT

Self-hosted AI platform with chat UI, RAG, plugins, and multi-model support.

Self-hosted all-in-one AI app to chat with docs, use agents, and run locally with multi-user support.

Self-hosted ChatGPT alternative with multi-model support, agents, MCP tools, and code interpreter.

Local-first AI workspace for multi-agent chat, coding, and visual workflows on desktop and web.

Local-first AI chat history analyzer for WhatsApp, Telegram, Discord, and more.

AI 恋爱军师 Codex Skill：先接住情绪，再分析关系并给出可执行策略。

Open-source, local-first AI research workbench with agents, MCP tools, and Python/R execution for reproducible science.

Self-hosted multi-user, multi-agent AI assistant with web dashboard, CLI, IM channels, and MCP connectors.

Portable offline AI assistant desktop app running GGUF models locally via llama.cpp.

Open-source local AI workspace for chat, agents, coding, RAG and fine-tuning on your own machines.