It's by Micropress Inc. I use their OS/2 version, but it doesn't have the GUI front end... since that's the part they actually sell (that and the one that converts .tex into .html) their OS/2 version is actually distributed gratis; I figure they must have a warp bigot on the programming team or something.

Check out their Windows version; it might have enough point-click-drool appeal to make it past the phb component... and is still as fully scriptable as any other TeX system is.

[link|http://www.micropress-inc.com|http://www.micropress-inc.com]

The OS/2 and Linux versions (don't have the gui, but are free for the downloading) are at [link|http://www.micropress-inc.com/os2/|http://www.micropress-inc.com/os2/].