Gradio

Gradio is an open-source Python library for quickly building demos and web applications for ML models, APIs, or any Python function. No JavaScript, CSS, or web hosting experience needed. Reached 1 million monthly developers in 2025. Features server-side rendering (v5.0) for faster page loads, sophisticated queuing for GPU-intensive workloads, streaming with Python generators, and seamless HuggingFace Spaces deployment. Deploy to HuggingFace for free with special Model Hub integration. Over 41,000 GitHub stars. Perfect for rapid ML prototyping and sharing.