The official installer from Labcenter runs in demo mode indefinitely. Limitations include:

Unlike simple shareware where a single code might unlock a full version, Proteus uses a structured licensing system managed by Labcenter Electronics. When you purchase the software, you are generally provided with a (often a physical USB dongle or a digital license file).

Disclaimer: This article is for educational and informational purposes. Labcenter Electronics, Proteus, ISIS, ARES, and VSM are trademarks of Labcenter Electronics Ltd. This content does not encourage or endorse software piracy.

: Many "license generators" are actually trojans or ransomware designed to compromise your computer.