proteus VSM is described as 'A virtual simulation environment for electronic circuits with support of digital and analog devices. It also provides virtual instruments and virtual debugging tools' and is a circuit simulator in the education & reference category. There are more than 10 alternatives to proteus VSM for a variety of platforms, including Linux, Windows, Mac, Web-based and Chrome OS apps. The best proteus VSM alternative is Circuit JS, which is both free and Open Source. Other great apps like proteus VSM are QUCS, Autodesk Tinkercad, Autodesk EAGLE and SimulIDE.