Rio – Open Source Web Apps in Pure Python, No JS/HTML/CSS Needed
Hey HN, Over the past 10 months, my friends and I created an open source project called Rio to help Python developers build modern web apps without needing HTML, CSS, or JavaScript. Whether you're working on a simple internal tool or a complex multi-page app, Rio lets you stay in the Python ecosystem without needing to learn frontend frameworks. With Rio, the UI is defined using Python components, inspired by React and Flutter. Instead of writing HTML/CSS, you compose reusable UI elements in Python and let Rio handle rendering and state updates. The backend and frontend stay seamlessly…
Rio – Open Source Web Apps in Pure Python, No JS/HTML/CSS Needed launched on March 8, 2025 with 6 votes and more than 75% of that year's launches. The site was still online in September 2026, 1 year on.
What it does
Build modern web applications in 100% Python
In the maker’s words, at launch
Hey HN, Over the past 10 months, my friends and I created an open source project called Rio to help Python developers build modern web apps without needing HTML, CSS, or JavaScript. Whether you're working on a simple internal tool or a complex multi-page app, Rio lets you stay in the Python ecosystem without needing…
Does a similar job
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Eel – a simple Python library for making little HTML GUI applications2018 · github.com · ▲201A little Python library for making simple Electron-like HTML/JS GUI apps - python-eel/Eel
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