This is a javascript electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. A red color indicates negative voltage.
Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
- Online

Comments about Circuit JS as an Alternative to Simulink
It may be a good alternative to Spice but not simulink, it is for circuits only
Not all applications can be modeled with circuits


This alternative is disputed. Circuit JS is a legitimate Simulink alternative, but it might have issues that some users think are important.
Circuit JS is the most popular Web-based, Windows, Mac & Linux alternative to Simulink.
Circuit JS is the most popular Open Source & free alternative to Simulink.
- Circuit JS is Free and Open Source

















































This only simulates circuits, and while it definitely works for circuits the UI is awkward.