While working on our new Graphics32 Testing framework I was looking for some simple framework that would simplify developing experts for the Delphi/BDS IDE.
Mattias told me about the OTAWizard framework over at CodeCentral:
http://codecentral.borland.com/Item.aspx?id=17106

There is also a nice article on that topic:
http://community.borland.com/article/0,1410,28050,00.html

Problem with the provided version is that it doesn’t work with BDS 2005 and 2006 due to multiple personalities in these IDEs.
So, here is my update:
http://www.katastrophos.net/downloads/OTAWizardsD2k5+.zip