Cross-Linker is a plugin that improves on-site SEO and user experience by allowing automated hyperlinking of given words to web addresses with ability to modify priority of plugin execution, and options to customize the plugin and its behaviour. It also offers optimization of database (valid for MyISAM tables), string replacement and append/prepend functions with support of English, German, Russian, French and other languages.

Change anything: Lucas String Replace takes the final output of WordPress and replaces the defined strings with another string

Automatically insert blocks of content before and/or after each posts/page content.

Append a string such as a hash to the end of menu links. Useful for creating menus that link to a section of a page without having to create a custom link or to add parameters to a page's URL, this way if your page ever changes you don't need to update the link.