Here is a incomplete list of links of websites and programs you may find usefull when creating your PCBs.

Software to design the schematic and layout

- KiCAD (https://www.kicad.org/)

- LibrePCB (https://librepcb.org/)

- EasyEDA (Browser based, https://easyeda.com/)

Sources for parts and footprints which are not included in the software

- SnapEDA (registration required, lots of parts for KiCAD, Altinum, Eagle, OrCAD, PCB123 and morehttps://www.snapeda.com/)

- KiCAD footprints and parts (https://www.kicad.org/libraries/download//)

- DigiKey library for KiCAD (https://www.digikey.com/en/resources/design-tools/kicad)
- Ultralibrarian (https://www.ultralibrarian.com/solutions/cad-vendors/kicad-pcb-libraries)

Changed the KiCAD urls to the new domain (kicad.org)