Other Software Sites - Links in this section have other sites that have a good selection of software links.

Other Digital Sites - Links in this section have more information on specific digital topics, such as interfacing soundcards, comments on RTTY terminal units, FAX/SSTV and more. If you'd like to try your hand at building your own soundcard interface, the Understanding Soundcard Interfacing site is a must read.

Retailers - Some well known retailers of digital hardware and software are presented here.

Mailing Lists (aka Reflectors) - In recent years, there's been a slow but steady development of mailing lists (reflectors) that are devoted to a vast multitude of topics. Of greater importance here is the existence of a few groups devoted to specific software. This is a big help to the beginner, as that person can ask questions and get answers before making a huge investment. Hopefully, more of these kinds of lists will appear in the near future.

Databases - It's sometimes necessary to use a database to look up an unfamiliar callsign, or to research unfamiliar networks. Some links for retailers and online databases are presented here. However, with the professional support is a jump in costs, so expect to spend more for such applications.