Most used taxonomy modules

For a drupal.org's list ordered by popularity, that is by usage statistics in descending order, see: Taxonomy modules. Currently, there are 218 contributed modules related to the core Taxonomy module, 134 of them with a Drupal 6.x version available.

They include, as the most used taxonomy modules: Tagadelic, Taxonomy Menu, Content Taxonomy, Taxonomy Manager, Feed Element Mapper, Taxonomy Breadcrumb, Menu Trails, Taxonomy Image, Taxonomy Access Control, etc.

(There is also a wiki page in this group on key taxonomy modules).

Note: The old link to taxonomy contributed modules (in the mission statement of this group) is not working correctly at this moment: it shows all modules, not just the taxonomy ones. I think it should be updated.