Hi,
for all of you who would like to have a list of freely available extensions, I have created such a list:
http://www.qlikblog.at/1939/a-comprehensive-list-of-qlikview-object-extensions-012013/
If I forgot to mention an extension, please drop me a line (GeoExtensions and document extensions will be posted in a separate post).
Hope this helps & Regards
Stefan