Autodesk Circuits is described as «empowers you to bring your ideas to life with free, easy to use online tools» and is a circuit simulator in the education & reference category. There are more than 10 alternatives to Autodesk Circuits, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android. The best alternative is KiCad, which is both free and Open Source. Other great sites and apps similar to Autodesk Circuits are Fritzing, LibrePCB, EasyEDA and gEDA Project.Autodesk Circuits alternatives are mainly Circuit Simulators but may also be Electronic Design Automation Tools or CAD Software. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Autodesk Circuits.