Download ((free)) Protel 99se ❲2026 Release❳

If using Windows 10 or 11, right-click the setup.exe file, go to Properties, and set Compatibility Mode to "Windows XP (Service Pack 3)".

Protel 99 SE is a legendary piece of software in the world of electronics design. Released by Protel (now Altium) in 1999, it became a staple for engineers and hobbyists alike for its integrated environment that handled everything from schematic capture to PCB layout. The Legacy of Protel 99 SE download protel 99se

As a legacy tool over 25 years old, Protel 99 SE is no longer officially supported or sold. Exploring Protel99 SE If using Windows 10 or 11, right-click the setup