Streamlit

Streamlit is an open-source Python library that makes it easy to create and share beautiful web apps for machine learning and data science. It turns data scripts into shareable web apps in minutes without requiring frontend experience. Key features include pure Python development with no HTML/CSS/JavaScript, instant live reload during development, built-in widgets for user input, dataframe and chart visualization, caching for performance, session state management, multi-page app support, custom components ecosystem, deployment on Streamlit Cloud, authentication and secrets management, and theming options. Streamlit is used by data scientists and ML engineers to build internal tools, dashboards, ML demos, data exploration apps, and proof-of-concepts rapidly.