OptSim

OptSim

Synopsys
CircuitSim OptSim

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CircuitSim:

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.
OptSim:

About

Synopsys OptSim is an award-winning photonic integrated circuit (PIC) and fiber-optic system simulator that enables engineers to design and optimize photonic circuits and systems. It offers state-of-the-art time- and frequency-domain split-step algorithms, providing a native photonic-domain environment for accurate simulations. OptSim can function as a standalone solution with its own graphical user interface or integrate into the OptoCompiler Photonic IC design platform. When integrated with OptoCompiler, OptSim supports electro-optic co-simulation with Synopsys PrimeSim HSPICE and PrimeSim SPICE electrical circuit simulators, and seamlessly integrates with the PrimeWave Design Environment for advanced simulation, analyses, and visualization, including parametric scans, Monte Carlo, and corner analyses. The software includes extensive libraries of photonic and electronic components and analysis tools, and supports numerous foundry process design kits (PDKs).
CircuitSim:

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
OptSim:

Platforms Supported

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

Audience

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

Audience

Engineers developing advanced fiber-optic communication systems requiring a solution to create precise simulation of photonic and electronic interactions
CircuitSim:

Support

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

Support

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

API

Offers API Not Supported
OptSim:

API

Offers API Not Supported
CircuitSim:

Screenshots and Videos

OptSim:

Screenshots and Videos

CircuitSim:

Pricing

$2.99
Free Version Supported
Free Trial Not Supported
OptSim:

Pricing

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

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
OptSim:

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
CircuitSim:

Training

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

Training

Documentation Supported
Webinars Supported
Live Online Supported
In Person Supported
CircuitSim:

Company Information

CircuitSim
Founded: 2025
United States
circuitsim.com
OptSim:

Company Information

Synopsys
United States
www.synopsys.com/photonic-solutions/optsim.html
CircuitSim:

Alternatives

OptSim:

Alternatives

OptoCompiler

OptoCompiler

Synopsys
CircuitSim:
OptSim:
CircuitSim:
OptSim:
CircuitSim:
TINA-TI

TINA-TI

Texas Instruments
OptSim:
RFPro Circuit

RFPro Circuit

Keysight
CircuitSim:
CircuitLogix

CircuitLogix

Logic Design
OptSim:
CircuitSim:

Categories

Circuit Simulation Supported
OptSim:

Categories

Optical Design Supported
CircuitSim:

Integrations

CODE V Optical Design Not Supported
MATLAB Not Supported
PrimeSim HSPICE Not Supported
OptSim:

Integrations

CODE V Optical Design Supported
MATLAB Supported
PrimeSim HSPICE Supported
CircuitSim:
Claim CircuitSim and update features and information
Claim CircuitSim and update features and information
OptSim:
Claim OptSim and update features and information
Claim OptSim and update features and information