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CircuitSim
Free browser circuit simulator with a full SPICE engine
CircuitSim is a free, browser-based circuit simulator powered by SPICE. Design and simulate electronic circuits online with 5,000+ components, a schematic editor, and real-time waveform charts. Try an idea before you order parts, or see why a circuit misbehaves. For educators teaching the next generation of electrical engineers, students eager to learn, and hobbyists building their next big idea.
Hi everyone! I’m Britt, one half of the team behind CircuitSim.
Years ago, My friend Sam and I worked on Multisim Live at NI. Even after leaving the company, we remained huge fans of the tool, having personally witnessed millions of people and educators use it to teach, build, and learn. When NI announced last year that they were shutting it down, we were incredibly disappointed.
However, we quickly realized this was a perfect opportunity to step in and build something deeply useful for educators, professionals, and hobbyists like ourselves. We’ve spent the last 12 months building CircuitSim from scratch into the tool that we always envisioned Multisim Live being. And we're so excited to announce it’s ready just in time for the EOL of Multisim Live.
Having spoken with hundreds of professors over the years, their requests were always the same. CircuitSim is built specifically around those core needs: a zero-install browser experience, real SPICE simulation, friction-free access for students, and a modern UI/UX that doesn't force students back into the 1990's.
Here is what we're launching with today: ⚬ A true SPICE engine running entirely in the browser. ⚬ A catalog of over 5,000 components, plus a custom component builder. ⚬ An importer that seamlessly opens your old Multisim Live circuit files. ⚬ Group licenses that let students jump into a private seat without needing to create a login. ⚬ A free tier, so you can literally open it up and start wiring a circuit right now.
It’s just the two of us building this on nights and weekends. We’ve already had a great response from the educator community and are completely committed to making this the best tool out there for teaching electronic circuits. We'd love to hear your feedback, so please let us know what you think in the comments! (Also, if you're an instructor scrambling to move off Multisim Live this term, reach out and I will gladly help you directly).
Thanks so much for checking us out!
About CircuitSim on Product Hunt
“Free browser circuit simulator with a full SPICE engine”
CircuitSim was submitted on Product Hunt and earned 2 upvotes and 1 comments, placing #159 on the daily leaderboard. CircuitSim is a free, browser-based circuit simulator powered by SPICE. Design and simulate electronic circuits online with 5,000+ components, a schematic editor, and real-time waveform charts. Try an idea before you order parts, or see why a circuit misbehaves. For educators teaching the next generation of electrical engineers, students eager to learn, and hobbyists building their next big idea.
On the analytics side, CircuitSim competes within Education, Developer Tools and Maker Tools — topics that collectively have 601.9k followers on Product Hunt. The dashboard above tracks how CircuitSim performed against the three products that launched closest to it on the same day.
Who hunted CircuitSim?
CircuitSim was hunted by Britt Espinosa. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CircuitSim including community comment highlights and product details, visit the product overview.
Britt Espinosa
Hi everyone! I’m Britt, one half of the team behind CircuitSim.
Years ago, My friend Sam and I worked on Multisim Live at NI. Even after leaving the company, we remained huge fans of the tool, having personally witnessed millions of people and educators use it to teach, build, and learn. When NI announced last year that they were shutting it down, we were incredibly disappointed.
However, we quickly realized this was a perfect opportunity to step in and build something deeply useful for educators, professionals, and hobbyists like ourselves. We’ve spent the last 12 months building CircuitSim from scratch into the tool that we always envisioned Multisim Live being. And we're so excited to announce it’s ready just in time for the EOL of Multisim Live.
Having spoken with hundreds of professors over the years, their requests were always the same. CircuitSim is built specifically around those core needs: a zero-install browser experience, real SPICE simulation, friction-free access for students, and a modern UI/UX that doesn't force students back into the 1990's.
Here is what we're launching with today:
⚬ A true SPICE engine running entirely in the browser.
⚬ A catalog of over 5,000 components, plus a custom component builder.
⚬ An importer that seamlessly opens your old Multisim Live circuit files.
⚬ Group licenses that let students jump into a private seat without needing to create a login.
⚬ A free tier, so you can literally open it up and start wiring a circuit right now.
It’s just the two of us building this on nights and weekends. We’ve already had a great response from the educator community and are completely committed to making this the best tool out there for teaching electronic circuits. We'd love to hear your feedback, so please let us know what you think in the comments! (Also, if you're an instructor scrambling to move off Multisim Live this term, reach out and I will gladly help you directly).
Thanks so much for checking us out!