LibrePCB

LibrePCB is a free electronic design automation (EDA) software for developing printed circuit boards (PCBs).

Key Features:

• Cross-platform (Unix/Linux, macOS, Windows)
• All-in-one package (project management, library/schematic/board editors)
• Intuitive, modern and easy-to-use graphical user interface
• Very powerful library design with some innovative concepts
• Human-readable file formats