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About

CircuitSim is a full SPICE circuit simulator with a 3,000+ component library and a modern schematic editor. No install, free to get started. Built for students, educators, and professionals. It runs in a browser tab and needs no admin rights, so it works on Chromebooks and locked-down school laptops. Run seven kinds of analysis: interactive, interactive operating point, transient, AC sweep, DC operating point, DC sweep, and parameter sweep. Results plot on oscilloscope-style charts, with probes you can drop anywhere in the circuit. Define custom parts from SPICE model text or import KiCad symbols. CircuitSim also imports Multisim Live designs ahead of that product's retirement on September 15, 2026. It is the only browser tool that opens .csim, .ms14, and .msjs files, and it rebuilds the schematic with wiring, placement, net labels, probes, and simulation settings intact. Classroom licensing adds seat assignment, anonymous student seats, and private student work.

About

PrimeSim HSPICE circuit simulator is the industry's "gold standard" for accurate circuit simulation and offers foundry-certified MOS device models with state-of-the-art simulation and analysis algorithms. With over 25 years of successful design tape outs, HSPICE is the industry's most trusted and comprehensive circuit simulator. For on-chip simulation, analog designs, RF design, custom digital design, standard cell design and characterization, memory design and characterization, and device model development. For off-chip signal integrity simulation, silicon-to-package-to-board-to-backplane analysis and simulation. HSPICE is a key part of the Synopsys analog/mixed-signal (AMS) verification suite, a solution built to address the most critical issues in AMS verification. HSPICE is the industry’s “gold standard” for accurate circuit simulation and offers foundry-certified MOS device models with state-of-the-art simulation and analysis algorithms.

Platforms Supported

Windows Not Supported
Mac Not Supported
Linux Not Supported
Cloud Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Supported

Platforms Supported

Windows Supported
Mac Not Supported
Linux Supported
Cloud Not Supported
On-Premises Not Supported
iPhone Not Supported
iPad Not Supported
Android Not Supported
Chromebook Not Supported

Audience

Engineering students, professors and teachers, makers and hobbyists, and practicing engineers

Audience

Industries that need a circuit simulation solution to perform state-of-the-art simulation and analysis algorithms

Support

Phone Support Not Supported
24/7 Live Support Not Supported
Online Supported

Support

Phone Support Supported
24/7 Live Support Not Supported
Online Supported

API

Offers API Not Supported

API

Offers API Not Supported

Screenshots and Videos

Screenshots and Videos

Pricing

$2.99
Free Version Supported
Free Trial Not Supported

Pricing

No information available.
Free Version Not Supported
Free Trial Not Supported

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation Supported
Webinars Not Supported
Live Online Not Supported
In Person Not Supported

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Supported

Company Information

CircuitSim
Founded: 2025
United States
circuitsim.com

Company Information

Synopsys
Founded: 1986
United States
www.synopsys.com/implementation-and-signoff/ams-simulation/primesim-hspice.html

Alternatives

Alternatives

MPLAB Mindi Analog Simulator

MPLAB Mindi Analog Simulator

Microchip Technology
RFPro Circuit

RFPro Circuit

Keysight
TINA-TI

TINA-TI

Texas Instruments
CircuitLogix

CircuitLogix

Logic Design

Categories

Circuit Simulation Supported

Categories

Integrations

OptSim Not Supported
PrimeWave Design Environment Not Supported

Integrations

OptSim Supported
PrimeWave Design Environment Supported
Claim CircuitSim and update features and information
Claim CircuitSim and update features and information
Claim PrimeSim HSPICE and update features and information
Claim PrimeSim HSPICE and update features and information