Best Chat UI Top 20

Open WebUI is a feature-rich, user-friendly self-hosted AI platform supporting Ollama and OpenAI-compatible APIs, with RAG, agents, and MCP capabilities.

Self-hostable multi-model chat UI compatible with Ollama and OpenAI.

NextChat is a lightweight, cross-platform AI assistant client supporting GPT-4, Claude, Gemini and more, with Web, desktop, and mobile experiences.

Cross-platform ChatGPT-style frontend, multi-provider and one-click deploy.

Modern open-source chat UI with multi-model and plugin support.

Lobe Chat is an open-source ChatGPT-style chat application with a plugin system and multi-model support, suitable as an agent conversation interface.

The ultimate space for work and life to find, build and collaborate with agent teammates that grow with you, enabling multi-agent collaboration and team design.

Run Local LLMs on Any Device. Open-source and available for commercial use. Provides fully offline local inference and chat for AI agents.

The agentic development environment built for coding with multiple AI agents, providing a next-generation terminal experience.

AnythingLLM is an all-in-one AI productivity app with a self-hosted chat UI, RAG knowledge base, AI agents, and multi-model management, privacy-first with zero configuration.

Open-source frontier voice AI from Microsoft, providing high-quality speech synthesis and recognition for building real-time conversational voice agent applications.

tldraw is an infinite canvas SDK for the web; its AI integrations let agents draw, annotate, and reason visually over a shared whiteboard.

Cherry Studio is an AI productivity studio with smart chat, autonomous agents, and 300+ assistants, providing unified access to frontier LLMs.

The original local LLM interface supporting text generation, vision, tool-calling, and training with both a web UI and API. Runs 100% offline and private.

Jan is an open source alternative to ChatGPT that runs 100% offline on your computer, supporting multiple local LLMs with a full desktop chat UI and API server.

Chatbox is a powerful cross-platform AI client supporting OpenAI, Claude, Gemini, and other LLMs with desktop and mobile apps.

Cross-platform desktop AI client with multi-provider and local model support.

LibreChat is an enhanced open-source ChatGPT clone featuring Agents, MCP tools, multi-model support, code interpreter, AI search, and more.

Fully open-source ChatGPT alternative with multi-provider and advanced agents.

Novu is the open-source notification infrastructure for developers, providing a unified API to deliver in-app, email, SMS, and push notifications triggered by agent events.