URLs of the index files used by the software update client on OS X

osx-software-update-urls.txt

10.3 (Panther):
https://swscan.apple.com/scanningpoints/scanningpointX.xml

10.4 (Tiger):
https://swscan.apple.com/content/catalogs/index.sucatalog
https://swscan.apple.com/content/catalogs/index-1.sucatalog

10.5 (Leopard):
https://swscan.apple.com/content/catalogs/others/index-leopard.merged-1.sucatalog

10.6 (Snow Leopard):
https://swscan.apple.com/content/catalogs/others/index-leopard-snowleopard.merged-1.sucatalog

10.7 (Lion):
https://swscan.apple.com/content/catalogs/others/index-lion-snowleopard-leopard.merged-1.sucatalog

10.8 (Mountain Lion):
https://swscan.apple.com/content/catalogs/others/index-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.8 (Mountain Lion incl. seeds):
https://swscan.apple.com/content/catalogs/others/index-mountainlionseed-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog

10.9 (Mavericks):
https://swscan.apple.com/content/catalogs/others/index-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.9 (Mavericks incl. seeds):
https://swscan.apple.com/content/catalogs/others/index-10.9seed-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog

10.10 (Yosemite):
https://swscan.apple.com/content/catalogs/others/index-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.10 (Yosemite incl. seeds):
https://swscan.apple.com/content/catalogs/others/index-10.10seed-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.10 (Yosemite Beta Program):
https://swscan.apple.com/content/catalogs/others/index-10.10beta-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog

10.11 (El Capitan):
https://swscan.apple.com/content/catalogs/others/index-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.10 (El Capitan incl. seeds):
https://swscan.apple.com/content/catalogs/others/index-10.11seed-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.11 (El Capitan Beta Program):
https://swscan.apple.com/content/catalogs/others/index-10.11beta-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog

10.12 (Sierra):
https://swscan.apple.com/content/catalogs/others/index-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog
10.12 (Sierra seed):
https://swscan.apple.com/content/catalogs/others/index-10.12seed-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

10.13 (High Sierra): 
https://swscan.apple.com/content/catalogs/others/index-10.13seed-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
10.13 (High Sierra seed): 
https://swscan.apple.com/content/catalogs/others/index-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

10.14 (Mojava):
https://swscan.apple.com/content/catalogs/others/index-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
10.14 (Mojava seed):
https://swscan.apple.com/content/catalogs/others/index-10.14seed-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz

10.15 (Catalina):
https://swscan.apple.com/content/catalogs/others/index-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz
10.15 (Catalina seed):
https://swscan.apple.com/content/catalogs/others/index-10.15seed-10.15-10.14-10.13-10.12-10.11-10.10-10.9-mountainlion-lion-snowleopard-leopard.merged-1.sucatalog.gz