Manual for getting started with VOACAP, an ionospheric prediction program.
http://www.uwasa.fi/~jpe/voacap/
Download the ACARS Log Analyzer Demo.
http://www.acarsonline.co.uk/
A development library designed to remotely control any rig, be it a transceiver or receiver. It is portable and licensed under LGPL.
http://hamlib.sourceforge.net/
All the questions for all three FCC written exams and provides you with three ways to learn Morse code.
http://hamuniversity.com/index.html
Help site for Amateur Radio Operators who use OS/2.
http://home.datacomm.ch/th.frey/ham2/
HAM software applications and utilities, plus a collection of links.
http://w4kgu.net/downloads.html
SD, by EI5DI offers fast, simple logging in the major international contests and other events. SDL is a freeware SWL contest logger. SDIOTA is a freeware IOTA (Islands On The Air) contest logger. ADIF (Amateur Data Interchange Format) support.
http://www.ei5di.com
Packet DX-cluster software. Information and downloads.
http://www.dxcluster.org/download/