There was a download of CircuitMod 2.7 on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. The following versions: 2.7, 2.6 and 1.0 are the most frequently downloaded ones by the program users.
Commonly, this program's installer has the following filename: circuitmod.exe. We cannot guarantee that the program is safe to download as it will be downloaded from the developer's website. Before launching the program, check it with any free antivirus software. This free program is an intellectual property of federoggio. This free PC program is developed for Windows XP/Vista/7/8/10/11 environment, 32-bit version. CircuitMod lies within Education Tools, more precisely Science Tools.
From the developer:
Circuitmod is an open source circuit simulator that extends the capacity of the original Falstad's Java Circuit Simulator into CMOS Chips, Led Arrays, Led Matrix and PIC Programming. The program features: TTL and CMOS Chips, LED Matrix, PIC Programming, Analog Circuits, and more.
You may want to check out more software, such as Equation Wizard, StatPlus or EarthBrowser, which might be similar to CircuitMod.