Falstad Circuit Simulator

What hackers pick instead

• Circuit ArtistPeople recommend it for its elegant signal propagation simulation, including Elmore delay, and its attractive pixel-art visuals. No common caveat appears in the quotes.11recommend
• CircuitJSFree, browser-based circuit simulator that people use to prototype analog circuits and teach electronics. Critics raised no recurring complaints.7recommend
• NAND-16People recommend it as a smooth, interactive way to learn how a computer works from NAND gates, even on phones; the most common caveat is incorrect circuit rendering.5recommend

Every quote

The 5 most detailed of 6 comments. Each links to the original.

1. electronic circuit emulators will help with the basics as well

   Recommends · Jan 2026 · in “Project Patchouli: Open-source electromagnetic drawing tablet hardware”

2. Some people like Everycircuit and Falstad for that.

   Recommends · Feb 2026 · in “Diode – Build, program, and simulate hardware”

3. falstad does this well in 2D

   Recommends · Feb 2026 · in “Diode – Build, program, and simulate hardware”

4. I knew he was the circuitjs guy which is impressive on its own

   Recommends · Aug 2026 · in “Falstad Math and Physics Simulations”

5. Nice animation on this site

   Recommends · Aug 2026 · in “I were 17, I'd learn how to build LLMs from scratch”