Circuit JS vs Ngspice

Circuit JS — Circuit JS is an easy-to-use, interactive circuit simulator and schematic capture tool for the web. It allows users to easily create and simulate circuits using standard components without installing

Ngspice — Ngspice is an open-source circuit simulator for electronics and semiconductors. It allows analyzing, modeling, and testing analog, digital and mixed-signal circuits with over 500 spice models of MOSFE

Circuit JS offers Interactive circuit simulator, Schematic capture tool, Standard components, Runs in web browser, Collaborative editing, while Ngspice provides SPICE circuit simulator, Supports digital, analog and mixed-mode circuits, Has an extensive model library, Supports PSpice compatible models, Has a graphical waveform viewer.

Circuit JS stands out for Easy to use interface, No installation required, Real-time circuit simulation; Ngspice is known for Free and open source, Powerful simulation capabilities, Large model library.

Feature	Circuit JS	Ngspice
Overall Score	N/A	N/A
Primary Category	Development	Development
Pricing	Free	Free

Product Overview

Circuit JS

Description: Circuit JS is an easy-to-use, interactive circuit simulator and schematic capture tool for the web. It allows users to easily create and simulate circuits using standard components without installing any software.

Ngspice

Description: Ngspice is an open-source circuit simulator for electronics and semiconductors. It allows analyzing, modeling, and testing analog, digital and mixed-signal circuits with over 500 spice models of MOSFETs, BJTs, diodes, transformers, etc.

Key Features Comparison

Circuit JS Features

• Interactive circuit simulator
• Schematic capture tool
• Standard components
• Runs in web browser
• Collaborative editing

Ngspice Features

• SPICE circuit simulator
• Supports digital, analog and mixed-mode circuits
• Has an extensive model library
• Supports PSpice compatible models
• Has a graphical waveform viewer
• Can generate netlists from schematics
• Has Monte Carlo and worst-case analysis
• Can do DC, AC, Transient and Fourier analysis

Pros & Cons Analysis

Circuit JS

Pros

• Easy to use interface
• No installation required
• Real-time circuit simulation
• Component library
• Shareable circuits

Cons

• Limited component library
• No offline usage
• Collaborative editing can be chaotic

Ngspice

Pros

• Free and open source
• Powerful simulation capabilities
• Large model library
• Compatible with many SPICE models
• Good for learning circuit simulation

Cons

• Steep learning curve
• Limited documentation and support
• No integrated schematic editor
• User interface is not very intuitive

Pricing Comparison

Circuit JS

• Free

Ngspice

• Free