Portions of the LaTeX Equation Editor include code and algorithms from Doug Rowland's Equation Services (particular the portions which support saving the source inside the PDF file).
The error message displayed when something goes wrong includes the "tiger.ps" graphic from the program Ghostscript.
The LaTeX Equation Editor uses the IconFamily class to make the icon of exported PDF files a thumbnail of the equation. The IconFamily class interface was written by Troy Stephens, Thomas Schnitzer, David Remahl, Nathan Day and Ben Haller.
The IconFamily Project Home Page:
http://homepage.mac.com/troy_stephens/software/objects/IconFamily/