Rated 5 out of 5 stars

5 stars for this extension, 0 stars to Mozilla for breaking it in Firefox 4. You can try an updated version at
http://code.google.com/p/chromelist/issues/detail?id=46
and changing the maxversion to 4.0.* in install.rdf. But even this version does not list all add-ons (doesn't list jar'ed add-ons?)