It allows the building of digital logic systems in the comfort of your own browser.
The user can select various input and output devices plus logic gates, wire them up and then test them.
The circuits can be saved, and images of the circuits produced. The circuits can be Public, which allows them to shared, useful for distance learning.
Previously saved circuits can be retrieved, but you need to click on the user name to get to the menu with the "My Circuits" option.
The developers say that though you could undertake a full CPU implementation, it is really designed for educational work.
It is certainly an interesting piece of software, and is happy running on a Raspberry Pi 3.
