8 Best Chatbot UI Alternatives in 2026 (Open Source)
Chatbot UI — AI chat for any model.. vs ChatGPT web app: open-source, self-hosted with Supabase backend for full data ownership — the most popular open-source ChatGPT UI clone with 28k+ stars
These 8 open-source tools do the same job. They are ordered by how closely they match Chatbot UI, with live GitHub data so you can see which projects are actively maintained.
| Tool | GitHub stars | Stars / 30d | Last commit |
|---|---|---|---|
| Chatbot UI(original) | 33.4k | +34 | 2024-06-22 |
| LobeHub | 82.9k | +1,368 | 2026-09-30 |
| Open WebUI | 153.6k | +3,958 | 2026-09-21 |
| LibreChat | 45.2k | +1,629 | 2026-09-30 |
| Chat UI | 11.0k | +56 | 2026-09-30 |
| Chatbot | 21.0k | +159 | 2026-07-08 |
| Chatbox | 41.9k | +442 | 2026-09-24 |
| AnythingLLM | 66.6k | +1,564 | 2026-09-30 |
| OpenChat | 5.2k | +-5 | 2024-02-27 |
1. LobeHub
The ultimate space for work and life — to find, build, and collaborate with agent teammates that grow with you. We are taking agent harness to the next level — enabling multi-agent collaboration, effo
What sets it apart: Unlike ChatGPT (closed) or Open WebUI (simple chat wrapper), Lobe Chat is an open-source agent collaboration platform with Agent Groups, white-box personal memory, a 10,000+ MCP plugin marketplace, and multi-modal support — positioning it as a full human-agent co-evolution workspace.
Best for: Teams wanting a modern ChatGPT alternative with agent collaboration, memory, and 10,000+ plugins; Developers seeking a self-hostable, extensible chat framework with MCP marketplace support
2. Open WebUI
User-friendly AI Interface (Supports Ollama, OpenAI API, ...)
What sets it apart: Unlike LM Studio (desktop-only, personal use), Open WebUI is a full multi-user platform with RAG, RBAC, SCIM provisioning, 9 vector DBs, and Google Drive/OneDrive integration — the most feature-complete self-hosted ChatGPT alternative
Best for: Teams wanting a self-hosted ChatGPT alternative with full data control and Ollama integration; Organizations needing enterprise-grade AI platform with LDAP/SCIM/SSO and multiple vector DB backends
3. LibreChat
Enhanced ChatGPT Clone: Features Agents, MCP, DeepSeek, Anthropic, AWS, OpenAI, Responses API, Azure, Groq, o1, GPT-5, Mistral, OpenRouter, Vertex AI, Gemini, Artifacts, AI model switching, message se
What sets it apart: Most feature-complete self-hosted ChatGPT alternative — uniquely combines agents, MCP, code interpreter, image gen, and multi-user auth in one package, unlike single-provider UIs
Best for: Organizations wanting a private, self-hosted ChatGPT replacement; Teams needing multi-user AI platform with access control and audit
4. Chat UI
The open source codebase powering HuggingChat
What sets it apart: Powers HuggingChat (huggingface.co/chat) — the most production-proven open-source chat UI with unique LLM Router for automatic model selection and native MCP tool support, unlike simpler UIs it handles multi-user, multi-model deployments
Best for: Self-hosting a ChatGPT-like interface for open-source models; Organizations wanting HuggingChat-quality UI for their own LLMs
5. Chatbot
A full-featured, hackable Next.js AI chatbot built by Vercel
What sets it apart: Vercel's official AI chatbot template — the most polished and production-ready Next.js chatbot starter with AI SDK, unlike generic templates it includes auth, persistence, multi-provider routing, and one-click Vercel deployment
Best for: Quickly bootstrapping a production chatbot with Next.js; Developers wanting a reference implementation of AI SDK best practices
6. Chatbox
Powerful AI Client
What sets it apart: vs ChatGPT web app: supports multiple LLM providers with local data storage; vs Open WebUI: lighter desktop-native app with mobile support rather than self-hosted web UI
Best for: Desktop users wanting unified LLM chat interface; Privacy-conscious users preferring local data storage; Teams sharing API resources
7. AnythingLLM
The all-in-one AI productivity accelerator. On device and privacy first with no annoying setup or configuration.
What sets it apart: Unlike Open WebUI (chat-only) or RAGFlow (enterprise RAG focus), AnythingLLM is the most complete all-in-one desktop AI app combining RAG, no-code agent builder, MCP compatibility, multi-user support, and embeddable widgets — requiring zero coding to set up a private AI workspace.
Best for: Non-technical users who want a private, all-in-one ChatGPT replacement with document chat and agents; Small teams needing a self-hosted multi-user AI workspace with RAG and agent capabilities
8. OpenChat
LLMs custom-chatbots console ⚡
What sets it apart: vs Chatbase/CustomGPT: self-hosted open-source chatbot platform with unlimited memory, codebase ingestion for pair programming, and embeddable website widgets — own your data without SaaS vendor lock-in
Best for: Building knowledge-base chatbots from company documents; Website customer support widgets with custom data; Pair programming assistance using codebase context