Internet Explorer

There's no Microsoft Internet Explorer support yet.

However, ReiniUrban looked at it:

"Adding Toolbar Buttons" at http://msdn.microsoft.com/en-us/library/aa753588(VS.85).aspx describes how to a script similar to the firefox script can be added via a simple Browser extension.

Unzip the firefox univedit.xpi

You need a .htm file with the javascript code like in wikihow.js to be activated whenever the special link like  is in the current document.

Create a GUID

HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Extensions\{GUID}\CLSID = {1FBA04EE-3024-11D2-8F1F-0000F87ABD16}

Point ...\{GUID}\Script to the .htm file

Create an .inf file to install the .htm, the registry settings and the two icons, 20x20 and 16x16, active and grayed (or transparent).

Anybody knows any javascript hackers who know the IE API better? wikihow.js is asynchron with lots of events to listen on location changes, but I don't think this is all needed for IE.