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Proteus Design Suite vs LibrePCB: catalog facts
Proteus Design Suite	LibrePCB
Paid Commercial software sold by Labcenter Electronics.	Free Free and open source with no paid tier.
Windows	Windows, macOS, Linux
Simulates microcontroller firmware together with the circuit Schematic capture and PCB layout in one suite	No cost, restrictions or online account Human-readable file format suited to Git
Commercial licence required Pricing is not listed on the homepage	Smaller ecosystem of ready-made parts than long-established EDA tools No circuit simulation built in
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	No account needed
Not stated if it works offline	Not stated if it works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.