Cadsoft Eagle Professional 7.1.0 -

Modern EDA tools cost $150–$500/year. A 7.1.0 license purchased in 2015 has paid for itself 10x over.

: Automatically routes traces based on user-defined design rules to optimize connectivity. LTC Spice Integration : Version 7.1.0 introduced a dedicated icon for CadSoft Eagle Professional 7.1.0

: This allowed for easy parsing of design files by external scripts. Modern EDA tools cost $150–$500/year