BOOLR is described as 'Digital logic simulator built with HTML and JavaScript using Electron . Simulations run asynchronously and in ticks so complex simulations won't cause freezes' and is a circuit simulator in the education & reference category. There are more than 10 alternatives to BOOLR for a variety of platforms, including Windows, Linux, Mac, Web-based and Self-Hosted apps. The best BOOLR alternative is Circuit JS, which is both free and Open Source. Other great apps like BOOLR are Logisim, CircuitJS1 Desktop Mod, CircuitLab and Hradla.