This is a list of categorized extensions — i.e. extensions that have sub-categorization such as Category:Parser extensions or Category:Calendar extensions. Categories such as the status and author were ignored in this search. This is by far an incomplete list of extensions and categories.
All extensions in the extension category were checked on the 5/5/2007, and this is the list of extensions that had a sub-category at the time. Any new extensions since then that have sub-categories will not be included here.
The extensions in parser and hook extensions were ignored and, so there may be some extensions in these categories that should probably be in other categories.