Altium Limited

Altium Limited is an international software company based in La Jolla, California. Founded as Protel Systems in 1985, it provides electronic design automation software to engineers for designing printed circuit boards. Its products are designed for use in a Microsoft Windows environment and used in industries such as automotive, aerospace, defence and telecommunications. Its flagship solutions are Altium Discover, Altium Develop, and Altium Agile, each of which is built on the unified electronics design software Altium Designer, and Altium 365, a cloud platform that connects stakeholders and centralises data. Altium became a subsidiary of Renesas Electronics in 2024.