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Description

CircuitSim is a comprehensive SPICE circuit simulation tool featuring a library of over 3,000 components and a contemporary schematic editor, all accessible online for free without the need for installation. Designed for use by students, educators, and professionals alike, it operates directly in a web browser, making it compatible with Chromebooks and secured school laptops without requiring administrative access. Users can perform seven types of analyses, including interactive and transient analyses, with results displayed on oscilloscope-style graphs and the ability to place probes at any point in the circuit. Additionally, users can create custom components from SPICE model text or import symbols from KiCad, enriching the simulation experience. CircuitSim also supports the import of Multisim Live designs before its scheduled retirement on September 15, 2026, making it a unique browser-based solution that can handle .csim, .ms14, and .msjs files, preserving wiring, component placement, net labels, probes, and simulation configurations. Furthermore, classroom licensing options are available, providing features such as seat assignments, anonymous student seating, and private student project spaces to enhance the educational experience. This ensures that educators can effectively manage their classroom environments while leveraging advanced simulation tools.

Description

DipTrace is a professional PCB design suite from Novarm Ltd, in continuous development since 2004 and used by over 30,000 engineers across 50+ countries. Companies in aerospace, defense, medical devices, and industrial electronics rely on it for production work. The suite covers the full design flow in one environment. Schematic Capture handles multi-sheet hierarchical projects with electrical rule check, a Digital SPICE Simulator for analog and digital circuits, and cross-selection with the board. PCB Layout provides interactive push-and-shove editing, where moving or rotating a placed component displaces neighbouring traces and vias as you work, and dragged traces route themselves around pads, keepouts, and existing copper. Designers choose whether design rules are enforced at all times or violations are permitted deliberately. High-speed work is supported through differential pair routing, length matching, layer stackup management, and a PCB calculator. Manufacturing output covers Gerber X2, ODB++, IPC-2581, NC Drill, and STEP for mechanical CAD. Version 5.3 introduced a native XML project format that mirrors the binary format feature for feature, making designs practical to keep under Git or another version control system. Component sourcing runs through a database-powered search with Mouser integration and SnapEDA access to more than 10 million parts. Projects import from Altium, KiCad, Eagle, OrCAD, EasyEDA Pro, Pulsonix, and PADS. DipTrace runs natively on Windows, macOS, and Linux. Licensing is perpetual — bought once, with no subscription or maintenance fees — across five editions starting at $75. Technical support is provided to every user, including those on the free edition.

API Access

Has API No 

API Access

Has API No 

Screenshots View All

Screenshots View All

Integrations

No details available.

Integrations

No details available.

Pricing Details

$2.99
Free Trial No 
Free Version Yes 

Pricing Details

$75 per license
Perpetual license, no subscription. Five editions: Starter $75, Lite $145, Standard $395, Extended $695, Full $995 per seat. Free edition available up to 300 pins. Volume, network, academic, and non-profit pricing available. Technical support included for all users.
Free Trial Yes 
Free Version Yes 

Deployment

Web-Based Yes 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows No 
Mac No 
Linux No 
Chromebook Yes 

Deployment

Web-Based No 
On-Premises No 
iPhone App No 
iPad App No 
Android App No 
Windows Yes 
Mac Yes 
Linux Yes 
Chromebook No 

Customer Support

Business Hours No 
Live Rep (24/7) No 
Online Support Yes 

Customer Support

Business Hours Yes 
Live Rep (24/7) No 
Online Support Yes 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) No 
In Person No 

Types of Training

Training Docs Yes 
Webinars No 
Live Training (Online) Yes 
In Person No 

Vendor Details

Company Name

CircuitSim

Founded

2025

Country

United States

Website

circuitsim.com

Vendor Details

Company Name

Novarm Ltd

Founded

2004

Website

diptrace.com

Product Features

Product Features

PCB Design

3D Visualization Yes 
Autorouting Yes 
Collaboration Tools No 
Component Library Yes 
Design Rule Check Yes 
Differential Pair Routing Yes 
Schematic Editor Yes 

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