LTspice
LTspice: A focused, free desktop tool for simulating and analyzing analog circuits. Ranked #8 of 41 in Electrical Design Software by our editors (6.7/10); pricing: Free plan; best for free analog circuit simulation.
At a glance
- Editor score6.7 / 10
- PricingFree plan
- Best forFree analog circuit simulation
- Free planYes
- Paid fromNone
- Schematic captureYes
- Facts checked21 Sep 2026
Where it wins
- Free and unlimited analog SPICE simulation
- Graphical schematic capture with waveform viewing
- Analog Devices models, demos, tutorials, and third-party model support
Where it doesn't
- Limited to Windows and macOS
- Focused on analog circuits rather than broader drafting
- No broader integration ecosystem is specified
Our verdict on LTspice
LTspice is a free desktop application from Analog Devices for designing and analyzing analog circuits. It combines graphical schematic capture, SPICE simulation, and waveform viewing in one workflow. The software is aimed at engineers, students, and electronics designers who need to model circuit behavior and inspect results through transient, AC, or noise analysis. Its ready-to-run demo circuits, tutorials, and Analog Devices macromodel library give users a practical starting point for common simulation work.
The published plan structure is straightforward: the Free plan includes SPICE simulation, schematic capture, and a waveform viewer. Analog Devices describes LTspice as free and unlimited, with no paid tier needed to access the listed capabilities. The standout feature is its analog simulation workflow, supported by transient, AC, and noise analysis tutorials, built-in models, third-party model support, and waveform inspection. Companion design tools can also export schematics for further simulation, which helps connect schematic creation with analysis.
Platform fit is narrower than the simulation feature set. LTspice is a desktop product available for Windows and macOS, including Windows x64 and ARM64 versions. It is a strong choice when analog circuit simulation is the primary requirement and a focused schematic-to-waveform workflow is sufficient. Teams seeking broader electrical drafting capabilities, a wider platform range, or a more extensive integration ecosystem should consider an alternative designed around those needs instead.
LTspice pricing
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LTspice fact sheet
| Free plan | Yes |
|---|---|
| Paid from | None |
| Schematic capture | Yes |
| Panel design | Not verified |
| Electrical simulation | Basic |
| Standards libraries | Yes |
| MCAD integration | Not verified |
| Deployment | Desktop |
| Deployment | Desktop |
| Platforms | Windows, macOS |
| Support | Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan (source) |
| Website | analog.com |
| Facts checked | 21 Sep 2026 |
Alternatives to LTspice
- ETAPA broad electrical engineering platform for modeling, analysis, field workflows, and automation.9.6
- Trimble Electrical DesignerA standards-focused suite for calculating, validating and reporting electrical system designs.8.1
- EPLAN Electric P8A broad ECAD tool for structured electrical documentation and production workflows.7.7
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LTspice vs the competition
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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