Editors and IDE

ED for Windows, V4.11. Power packed programmer's editor with comprehensive Matlab support   
ED V4.11, Build 0.0 has been released with much anticipated MATLAB language support, including full code navigation and browsing capabilities via. ED's Source Database. ED will be more useful than ever before to the many MATLAB programmer's out there, bringing them a whole new level of editing power. We welcome feedback from MATLAB users.

http://www.getsoft.com
Submitted Aug 22, 2004 by Neville Franks
Updated Aug 10, 2005 by Neville Franks
Crimson Editor   
This is an excellent freeware IDE that does more than MATLAB. Definitely a worthy competitor for paid software like the ED (link 1).

http://www.crimsoneditor.com/
Submitted Dec 21, 2005 by Madhu
Updated Dec 22, 2005
MATLAB Code Colorizer   
This program can colorize and format your MATLAB codes and help you out publishing your codes to Internet, CDROMs or any other educational media. Using this site you can also email your formatted code to yourself or your colleague, or just copy and paste the output HTML code to your homepage, this online program is free to use If you want to publish your MATLAB codes to internet this program can beautify it!

http://pitchup.com/matlabcolorizer/
Submitted Jun 25, 2005 by Siamak Faridani
Updated Jun 27, 2005