A few time ago I created a very easy plugin which automatically converts categories names, when cited in posts or pages, into links to the same categories. So I called it Categories Autolink.
It means that if writing an article you cite a category of your blog (for instance â€œPluginsâ€œ), that word is automatically turned into a link to the cited category.
Itâ€™s a pretty easy plugin, written in PHP/SQL, which I released with the GPL license.
Download and (a few) more infos at: