MorfeoShow

Installed and working with this gallery component in Joomla 1.5 version.

Once installed a nice logical component for generating different styled galleries, no limit on number of galleries with a limit on 50 images per gallery.

http://morfeoshow.joomlaitalia.com/

JCrawler

A perfect XML-Sitemap generator.

This component does the same as the Google crawler. It crawls your Joomla site and stores all the urls in a XML file. After the crawling you can submit the XML-file to Google, Ask.com, Moreover, Yahoo and MSN.

http://extensions.joomla.org/component/option,com_mtree/task,viewlink/link_id,5386/Itemid,35/