Streamlit
What it is: Turn Python scripts into shareable web apps. No HTML, CSS, or JavaScript needed.
What It Does Best
Zero web dev. Pure Python. Add widgets with single function calls. No frontend knowledge required.
Fast prototyping. Script to app in minutes. Perfect for demos, POCs, internal tools.
ML model deployment. Show model predictions interactively. Upload data, get results, visualize—all in one app.
Pricing
Open source: Free
Community Cloud: Free public apps
Enterprise: Custom pricing (private apps, auth)
When to Use It
✅ Demo ML models to stakeholders
✅ Internal data tools
✅ Prototypes and POCs
✅ Don't know web development
When NOT to Use It
❌ Production applications (not designed for scale)
❌ Complex UX requirements (limited customization)
❌ High traffic sites (performance limits)
Bottom line: Game-changer for data scientists. Show your work without learning React. Perfect for internal tools and demos, not production apps.