OpenCircuits is a web-based digital circuit and logic designer that provides an interactive environment for building and exploring digital logic designs in the browser.
It’s aimed at people who want an accessible way to sketch, test, and refine circuits online for education, study, or hobbyist experimentation.
This is free and open source software.
Key Features
- Create and design simple or complex circuits.
- Turn a circuit into an IC for easy reuse.
- Save and load circuits to your hard drive.
- Offers smooth performance even with complex circuits.
- Includes LEDs and 7-segment displays.
- Supports keyboard and mouse gates for interactive circuits.
- Runs on any device with ES6 support.
Website: github.com/opencircuits/opencircuits
Support:
Developer: OpenCircuits
License: GNU General Public License v3.0

OpenCircuits is written in TypeScript. Learn TypeScript with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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