Logic Gate software | Logic Gate Tool | Create Logic Gates Viewing complex logic gate diagrams in a web page couldn't get any easier. Real-time Collaboration to Draw Logic Gates Online Drawing logic circuits online is a complex process, and sometimes it can be hard to figure out where you went wrong. Logic Gate Simulator | Academo - Free, interactive Logic Gate Simulator. A free, simple, online logic gate simulator. Investigate the behaviour of AND, OR, NOT, NAND, NOR and XOR gates. Select gates from the dropdown list and click "add node" to add more gates. Drag from the hollow circles to the solid circles to make connections. Right click connections to delete them. See below for more detailed instructions.