FOX Development Libraries: https://cyberia.cfdrc.com/FOX/fox.html
Hills Design Group: https://www.linuxsupportline.com/~davin/
Linux Journal: https://www.linuxjournal.com/
The Official RPM Home Page: https://www.rpm.org/
RPM Documentation Project: https://www.rpmdp.org/
Salmar Consulting Inc.: https://www.salmar.com/
The WINE Headquarters: https://www.winehq.com/