== 开源EDA 工具

1. KiCad [https://www.kicad.org/], [https://gitlab.com/kicad/]
2. LibrePCB https://github.com/LibrePCB/LibrePCB
3. gEDA http://www.repo.hu/projects/geda-archive/www.geda-project.org/
4. signex  https://github.com/alplabai/signex