A clone of LogicHex by Notch (yes, the guy who made Minecraft) using Javascript canvas. Try it out: http://anubiann00b.github.io/HexLogic/
Here are some examples of what you can make:
Switch direction:
AND gate:
Multiplexer:
Adder:
Adder that's more chainable:
SR-NOR latch:
Better SR-NOR latch:
Much better Adder:
