At the moment the default interface of Voyeur doesn't expose the range of tools that are available. As an awkward workaround, you can try this:
Click on the export icon to generate a URL of your corpus (notice that here I'm working on voyeurtools.org instead of voyeur.hermeneuti.ca):

This will generate a URL that looks something like this: http://voyeurtools.org/?corpus=1278412802513.7776
What you can do is insert tool/<em>toolName</em> in this address to see other tools (your mileage may vary):