: If you only need to open and print existing diagrams, the official sPlan Viewer is completely free and supports all previous versions.

If you want to explore the best path forward for your projects, let me know: What do you use?

Developed by ABACOM, is a lightweight, widely praised Computer-Aided Design (CAD) software specifically engineered for drawing electrical and electronic circuit diagrams. It is highly regarded by hobbyists and engineers alike for its minimal learning curve and clean output. Key features of the official software include: