Top 10 Open-Source User Interfaces for LLMs

Open-source user interfaces for large language models (LLMs) are empowering developers, researchers, and businesses to interact with AI models locally and securely. These UIs offer everything from simple chat interfaces to advanced agent frameworks, supporting a wide range of models and deployment scenarios. In 2025, the landscape is richer than ever, with options tailored for privacy, customization, and rapid prototyping. This guide covers the 10 best open-source UIs for LLMs, their standout features, and direct links to their repositories. 1. Open WebUI Open WebUI is a self-hosted, extensible AI interface that supports Ollama, OpenAI API, and various LLM runners. It features granular permissions, responsive design, full Markdown/LaTeX support, hands-free voice/video calls, native Python function calling, persistent artifact storage, local RAG integration, web search, image generation/editing, and enterprise authentication. It’s ideal for privacy-focused deployments, local model exper