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LTspice — CAD (Free)

LTspice is a free CAD solution from Analog Devices. Compare it against 88 other CAD tools on FreeSoftwareX — by features, licensing and price — and request a quote or demo free in 2026.

What is LTspice?

LTspice is free to use — there is no purchase cost for the core product, so you can evaluate and roll it out without upfront spend. It is categorised under CAD and published by Analog Devices. Buyers typically evaluate LTspice when they need a dependable CAD option and want to weigh the trade-offs between free, open-source and paid tools before committing.

LTspice alternatives

If LTspice isn't the right fit, compare these CAD alternatives side by side:

ABViewerAC3DACISAlibre DesignAllplanAltium DesignerArchiCADAutoCADAutoCAD ElectricalAutodesk AliasAutodesk EAGLEAutodesk InventorAutodesk RevitBRL-CAD

Frequently asked questions

Is LTspice free?
Yes. LTspice is free to use, with no purchase cost for the core product.
What are the best LTspice alternatives?
Popular CAD alternatives to LTspice include ABViewer, AC3D, ACIS, Alibre Design. See the full list of CAD on FreeSoftwareX.
What type of software is LTspice?
LTspice is a free CAD tool developed by Analog Devices.

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