CQ 60 meters

CQ Magazine

Daily DX

DF5AI Amateur radio Propagation Studies

DXscape                                                                                                                                                       

DXZone.com

G0CWT

GM0HCQ

G4HPE-L HF Gateway Project

HCJB

HK0GU

MM0BQI

N6HB

N8AD

Propfire (Firefox plug-in)

Rockall

Scottish Ham Portal

Syllabic Squelch Home Construction Project

VK9L/N

W6EL Propagation Software

Worldwide DX Club

ZK3 by Italians