VBA Code Obfuscation Utilities (for Excel and other Office Apps)

VBA Code Cleaner (http://www.appspro.com/Utilities/CodeCleaner.htm)

Total Visual CodeTools (http://www.fmsinc.com/products/CodeTools/index.html)

Invisible Basic (http://invisiblebasic.sourceforge.net/)

HandyObfuscator (http://handyquant.com/HandyObfuscator.aspx)