Warren, I'm not a teacher, I'm a technologist with a strong interest in creating online educational resources. I haven't tried all of the tools you've posted but I did try the Word Search tool. Very nice!
As your site is built right now there is a barrier of entry in that visitors have to actually use a tool in order to experience it. Perhaps offering links to pre-created tools might help others see the benefits of each tool. In this regard, even thumbnail images would allow visitors to preview a tool without investing too much time.
Anyway... just some quick feedback. I know personally, how time consuming it is to create what you've done, so I applaud your efforts!