BOOLR is a Digital Logic Simulator; created with JavaScript, HTML5, CSS3 and runs in Electron.
Born as “final year project” from three Dutch students, let people exercise with boolean logic, using AND, NAND, OR Ports, lamps, pushbuttons and more.
Here a quick video :

and a screenshot of the available functions

credits: Boolr.me

multi platform: Linux, Mac Os and Windows, is easy and fun to use to improve your skills with logic boards.