Faster sitemap is a simple tool that gives you your menu and url article for Joomla 2.5 and Joomla 3.0.
Sitemap Jooma 3 and Joomla 2.5
The idea of building a Joomla component to make a sitemap came from the fact that all the tested tools was not working or badly (url in double, not installable component ...), i think i have no chance :)
Sitemap faster is very simple to install
Download the zip file "sitemap xml faster joomla joomla 3 and 2.5" below
In your Joomla administration go to extension and install the zip download free
And now you are ready to have your sitemap joomla by going to the Joomla administration component / sitemapfaster
The list appears on your URLs directly, you just have to click on the icon to download sitemap faster (there are 2 link that's normal because new users of joomla don't find the principal button).
Download sitemap faster for Joomla 
New Version without id categories and article for last version of joomla
Old Version with id categories and article for old version of joomla
Be careful the version joomla 3.8.1 for sef url "experimental" don't work with this version of sitempafaster (some url are crazy with a melting of categories and menu ...).