qrz callsign lookup

Russian Callsign database - Russians Ham on-line lookup database. Search and create new callsign records. The most full russian and CIS callsign database (more 50,000 CIS records). More than 1,400,000 international calls.

Ham - Open Source Ham Radio App for Android. Solar / calculated band conditions & Callsign lookups via QRZ.com XML subscription.

EZCalls - Windows ham radio callsign lookup utility, thatwWorks with internet, QRZ CD, or HamCall CD

MixW - Online QRZ.com Lookup dll - This add-in for MixW will automatically do a callsign lookup from qrz.com and fill select information into your MixW log entry. It also optionally checks to see if the station is a known LoTW user