BrainBox is described as 'Physical things are great. Hardware companies like Apple, Arduino, etc are disrupting our lives in a big way. At BrainBox we love hardware hackers and are in absolute awe of their awesome design and applications they build' and is a circuit simulator in the education & reference category. There are more than 10 alternatives to BrainBox for a variety of platforms, including Windows, Linux, Mac, Web-based and Android apps. The best BrainBox alternative is Circuit JS, which is both free and Open Source. Other great apps like BrainBox are QUCS, SimulIDE, gEDA Project and BOOLR.