This website is made to know what is the lastest version of Epsilon, the official OS for the Numworks.
If you want to also keep every release that Numworks publish, you can use NumworksVersionChecker,
a tool that i made (but you will need to self-host it).
NumWorks is a registered trademark of NumWorks SAS, 24 Rue Godot de Mauroy, 75009 Paris, France.
NumWorks SAS isn't associated in any shape or form with this project.