6152 Ellen Ankuda: Developing 4th Dimension databases can be lucrative.
MacTech Magazine 10/7 (July 1994), 30-31. Custom 4D developers typically
make between $50 to $200 an hour. You can create an incredible front end
with a great GUI in fraction of the time required by traditional programming
languages. There are virtually non limits to what can be accomplished using
4D's built-in-tools, and by creating extensions written in C to enhance
that environment. 

6726 Nick Merritt: Eudora 2.1. 
Internet and Comms Today March 1995, 28-29. A good program, but the shareware
version is almost as good.

6151 David Rogers: Alpha. An adaptable programmer's editor.
MacTech Magazine 10/7 (July 1994), 21-27.