Best Alternatives to Logisim-evolution
Logisim-evolution is the most complete free digital logic simulator for coursework — but it is not the only option. Here are the real alternatives, what each is best for, and when to pick it instead. All of them are free.
| Tool | Type | Best for |
|---|---|---|
| Logisim-evolution | Desktop (Win/Mac/Linux) | Full coursework: simulation, timing diagrams, VHDL/Verilog export, FPGA boards |
| Digital by Helmut Neemann | Desktop (Java) | A modern, actively developed alternative with a clean interface; strong on analysis and testing features |
| CircuitVerse | Web (browser) | Quick classroom demos and homework when you cannot install software; interface feels familiar to Logisim users |
| DigitalJS | Web (browser) | Visualizing Verilog / synthesized circuits in the browser; teaching-oriented |
| Original Logisim 2.7.1 | Desktop (Java) | Legacy compatibility only — reproducing old tutorials or papers exactly |
Digital — by Helmut Neemann
A Java-based digital logic designer and circuit simulator with about 6,000 GitHub stars. Open-source (GPL-3.0). It covers the same educational ground as Logisim-evolution with its own take on the interface, plus built-in circuit analysis and testing tools. Worth trying if you want a second opinion on your design. Get it from github.com/hneemann/Digital.
CircuitVerse — online
A free, open-source platform for designing and simulating digital circuits entirely in the browser — no install needed. It supports multi-bit buses, subcircuits, combinational analysis, and timing diagrams, and its interface will feel familiar if you know Logisim. Best choice for Chromebooks or locked-down lab machines. Available at circuitverse.org.
DigitalJS — online
A browser-based simulator by Marek Materzok (University of Wrocław), designed to visualize circuits synthesized by hardware tools like Yosys, and useful as a teaching aid. If your course works with Verilog and you want to see the result in a browser, this is the one. Try it at digitaljs.tilk.eu.
Which should you choose?
- Default choice for a digital design course: Logisim-evolution — it has the timing view, HDL export, and FPGA support your assignments likely need.
- Cannot install anything? CircuitVerse in the browser.
- Want to compare tools or double-check a design? Digital is a solid second desktop simulator.
- Working with Verilog in the browser? DigitalJS.
Still the best all-round pick:
Related reading: Logisim vs Logisim-evolution · Is there an online version? · What is Logisim-evolution?