Best ngspice Alternatives in 2026
The top ngspice alternatives are ETAP, Trimble Electrical Designer and EPLAN Electric P8: 15 electrical design software our editors would look at instead of ngspice, in our ranking order.
ngspice: A capable free simulation engine for developers who can work with netlists and command files. Where it falls short: no built-in schematic capture or visual schematic entry.
Switching from ngspice? For most electrical design software buyers the best ngspice alternative is ETAP, built for power-system engineering teams needing field workflows. On a budget, PSS®E starts at $3,830/device/mo. KiCad has a free plan.
Why People Look for a ngspice Alternative
- No built-in schematic capture or visual schematic entry
- Requires netlists and command files for design input
- No AI features and a desktop-focused deployment model
- No schematic capture — 11 of the alternatives below have it
Quick Picks by What You Need
- Best overallETAP8.9
Power-system engineering teams needing field workflows
Visit ETAP - Lowest pricePSS®E8.0
Paid plans from $3,830/device/mo
Visit PSS®E - Best free optionKiCad8.6
Has a free plan
Visit KiCad - Best for schematic captureETAP8.9
Schematic capture (ngspice: no)
Visit ETAP
All 15 ngspice Alternatives, Ranked
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
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Best forPower-system engineering teams needing field workflows
- Better than ngspice:
- Schematic capture
- Editor score 8.9 vs 7.9
A broad electrical engineering platform for modeling, analysis, field workflows, and automation.
- Panel design
- MCAD integration
- Schematic capture
8.9/10★★★★☆Visit ETAP -
Best forStandards-based electrical calculations
- Better than ngspice:
- Schematic capture
- Editor score 8.8 vs 7.9
A standards-focused suite for calculating, validating and reporting electrical system designs.
- Schematic capture
- Standards libraries
8.8/10★★★★☆Visit Trimble -
Best forProfessional electrical documentation teams
- Better than ngspice:
- Schematic capture
- Editor score 8.7 vs 7.9
A broad ECAD tool for structured electrical documentation and production workflows.
- Panel design
- MCAD integration
- Schematic capture
8.7/10★★★★☆Visit EPLAN -
Best forBudget-conscious PCB designers
- Better than ngspice:
- Schematic capture
- Editor score 8.6 vs 7.9
A capable free PCB suite for designers who value control over broad integrations.
- MCAD integration
- Schematic capture
- Standards libraries
8.6/10★★★★☆Visit KiCad -
Best forCloud-connected PCB design teams
- Better than ngspice:
- Schematic capture
- Editor score 8.5 vs 7.9
A cloud-connected PCB suite for teams spanning circuit design through manufacturing handoff.
- MCAD integration
- Schematic capture
- Standards libraries
8.5/10★★★★☆Visit Cadence -
Best forEnd-to-end PCB electrical design
- Better than ngspice:
- Schematic capture
- Editor score 8.4 vs 7.9
A broad PCB design environment for teams that need connected electrical and mechanical workflows.
- MCAD integration
- Schematic capture
- Standards libraries
8.4/10★★★★☆Visit Altium -
Best forUtility and distribution network modeling
- Better than ngspice:
- Schematic capture
- Editor score 8.2 vs 7.9
A deep utility modeling suite for power-flow, faults, transients, DER, and enterprise integration.
- Schematic capture
- Standards libraries
8.2/10★★★★☆Visit Eaton -
Best forMATLAB-based electrical system simulation
- Better than ngspice:
- Schematic capture
- Editor score 8.1 vs 7.9
A deep MATLAB-based simulator for electrical systems, but not a panel-design tool.
- Schematic capture
- Standards libraries
8.1/10★★★★☆Visit MathWorks -
Best forEnterprise transmission-system analysis
- Better than ngspice:
- Editor score 8.0 vs 7.9
A deep transmission-analysis suite for organizations that need advanced network studies.
8.0/10★★★★☆Visit Siemens -
Best forFree analog circuit simulation
- Better than ngspice:
- Schematic capture
A focused, free desktop tool for simulating and analyzing analog circuits.
- Schematic capture
- Standards libraries
7.9/10★★★★☆Visit LTspice -
Best forIndustrial electrical schematics and PLC projects
- Better than ngspice:
- Schematic capture
A deep Windows desktop tool for industrial schematics, PLCs, panels, and reporting.
- Panel design
- Schematic capture
- Standards libraries
7.9/10★★★★☆Try Bentley promis.e -
Best forFree machine electrical design
A free Siemens web tool for machine-panel design, verification, sizing, and documentation.
- Panel design
- Standards libraries
7.9/10★★★★☆Visit Siemens -
Best forAdvanced grid simulation and protection studies
A mature desktop suite for advanced power-system simulation, protection and planning studies.
- Standards libraries
7.9/10★★★★☆Visit DIgSILENT -
Best forBuilding power studies and arc-flash analysis
- Better than ngspice:
- Schematic capture
A deep Windows desktop suite for power studies, arc-flash analysis, and documentation.
- Panel design
- MCAD integration
- Schematic capture
7.9/10★★★★☆Visit EasyPower -
Best forIndustrial power studies and arc-flash work
Deep electrical studies for industrial projects, with Windows-only desktop deployment.
- Panel design
- MCAD integration
- Standards libraries
7.7/10★★★★☆Try SKM Power*Tools
ngspice Alternatives: Common Questions
What is the best alternative to ngspice?
ETAP: #1 in our Electrical Design Software ranking, with an editor score of 8.9 out of 10. A broad electrical engineering platform for modeling, analysis, field workflows, and automation.
Is there a free alternative to ngspice?
Yes. KiCad, LTspice and Electrical Designer have a free plan or a free tier.
Why do people look for ngspice alternatives?
No built-in schematic capture or visual schematic entry; Requires netlists and command files for design input; No AI features and a desktop-focused deployment model.
How do I switch from ngspice?
Export your data from ngspice (most tools have an export in their settings). Sign up for the alternative; start on its free plan or trial if it has one. Import your export and set up the integrations your team relies on. Run both side by side for a short while, then cancel ngspice.
How to Switch from ngspice
- Export your data from ngspice (most tools have an export in their settings).
- Sign up for the alternative; start on its free plan or trial if it has one.
- Import your export and set up the integrations your team relies on.
- Run both side by side for a short while, then cancel ngspice.
ngspice vs Each Alternative
| # | Tool | Free plan | Paid from | Schematic capture | Electrical simulation | Standards libraries | MCAD integration | Score |
|---|---|---|---|---|---|---|---|---|
| 13 | ngspice | Yes | Free | No | Advanced | Yes | 7.9 | |
| 1 | ETAP | No | Yes | Advanced | Yes | Yes | 8.9 | |
| 2 | Trimble Electrical Designer | Yes | Advanced | Yes | 8.8 | |||
| 3 | EPLAN Electric P8 | Yes | None | Yes | Yes | 8.7 | ||
| 4 | KiCad | Yes | Free | Yes | Advanced | Yes | Yes | 8.6 |
| 5 | OrCAD X | No | Yes | Advanced | Yes | Yes | 8.5 | |
| 6 | Altium Designer | No | Yes | Basic | Yes | Yes | 8.4 | |
| 7 | CYME | Yes | Advanced | Yes | 8.2 | |||
| 8 | Simscape Electrical | No | Yes | Advanced | Yes | 8.1 | ||
| 9 | PSS®E | No | $3,830/device/mo | No | Advanced | No | No | 8.0 |
| 10 | LTspice | Yes | Free | Yes | Basic | Yes | 7.9 | |
| 11 | Bentley promis.e | No | Yes | None | Yes | 7.9 | ||
| 12 | Electrical Designer | Yes | Free | Basic | Yes | 7.9 | ||
| 13 | DIgSILENT PowerFactory | No | Advanced | Yes | 7.9 | |||
| 14 | EasyPower | No | Yes | Advanced | Yes | Yes | 7.9 | |
| 15 | SKM Power*Tools | No | No | Advanced | Yes | Yes | 7.7 |
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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