Alan Freedman -- The Computer Language Company - Computer Desktop Encyclopedia
Computer Desktop Encyclopedia
Longest-Running Tech Reference on the Planet

Our Windows app is the best way to use CDE. It reads like a book and links every term with every other. Updated automatically. More details.

Our iPhone app includes all the text for instant lookup. There is no computer dictionary on the iPhone that even comes close. More details.

Our Android app follows in the footsteps of our iPhone app and includes all the text for instant lookup. More than 40,000 cross references. More details.

The most successful computer dictionary in print, our first book was in 1980 and our last in 2001. Tech moves too fast for print. Book history.