[malloc-0x90]

User maven29 already mentioned the NumWorks open source calculator, and the new OS fork, but here is a video to better appreciate some of the features:

- https://youtu.be/UnethgugvPA

- https://youtu.be/GHWcLdQnfqI

Online emulator that runs in your browser: https://getupsilon.web.app/simulator

[uticus]

Which also runs Python https://www.numworks.com/calculator/apps/python/