Voilà is described as 'turns Jupyter notebooks into standalone web applications. Each user connecting to the Voilà tornado application gets a dedicated Jupyter kernel which can execute the callbacks to changes in Jupyter interactive widgets'. There are four alternatives to Voilà for a variety of platforms, including Linux, Mac, Self-Hosted solutions, Windows and Online / Web-based. The best alternative is OpenBoard, which is both free and Open Source. Other great apps like Voilà are Shiny (Freemium, Open Source), Panel (Free, Open Source) and Streamlit (Freemium, Open Source).
Streamlit is an open-source Python library that makes it easy to create and share beautiful, custom web apps for machine learning and data science. In just a few minutes you can build and deploy powerful data apps.