WA7BNM Contest Calendar

http://www.hornucopia.com/contestcal/index.html

SM3CER Contest Service

http://www.sk3bg.se/contest/

UA9QCQ Contest

http://ua9qcq.com/en/

RBN Telegraphy

https://rbn.telegraphy.de/ 

LogSP

http://logsp.pzk.org.pl/