Qth Websites
qrz.com
World's leading amateur radio web site with news, technical articles, discussions, practice exams and more.
13,218 
$ 1,015,920.00
hamqth.com
Free hamradio callbook with very fast XML access for logging programs, recent activity, logsearch, condx prediction, multilanguage support etc.
2,030,969 $ 480.00