With this extension for the WordPress plugin PostLists (
http://www.rene-ade.de/inhalte/wordpress-plugin-postlists.html) PostLists-lists can be configured to be repeated for each category, tag, author or postparent. This can be used to create a tag-index, lists with all active authors and their last posts or a list of all attachments for example.
Plugin Website:
http://www.rene-ade.de/inhalte/wordpress-plugin-postlists-extension-repeat.html
Install and activate the WordPress plugin "PostLists" first if you have not already done!
http://www.rene-ade.de/inhalte/wordpress-plugin-postlists.html
Installation of this PostLists-Extension: Upload the folder "ple-repeat" (with all files and subfolders) to your plugins directory ("/wp-content/plugins/"). Then activate the plugin "PostLists-Extension Repeat" in your WordPress admin panel.