The linktocontent module allows you to extend the tinyMCE editor by several plugins.
With these plugins you can link to nodes or menu items or user profiles (planned for drupal 6.x).
Plugins:
linktocontent_node.module
Link to every node of every enabled type by browsing through your taxonomy structure.
linktocontent_menu.module
Link to menu items by browsing through your menu structure. You can enable each menu you like (for example "Navigation" or "Primary links").
linktocontent_category.module
Because linktocontent_node does not work correctly with containers and categories (category.module) linktocontent_category is an addon to it. It does not provide an own TinyMce plugin but will extend linktocontent_node.
Planned plugins (drupal 6.x):
linktocontent_profile
With linktocontent_profile you can insert links to user profiles. If organic groups is enabled you can browse the groups and select the users in them.
The SpamSpan module obfuscates email addresses to help prevent spambots from
collecting them. It is based on the technique from spamspan but has undergone major modifications, as the original spamspan code hasn't been updated since 2007.
ImageField provides an image upload field for CCK. ImageField is a CCK-based alternative to the legacy Image project. It boasts features such as multiple images per node, resolution restrictions, default images, and extensive Views support.
ImageField does not provide a built-in thumbnail solution, but complements the incredibly powerful thumbnail generation module ImageCache.
The gotwo.module adds the option to add redirected urls. It's much like the url alias system except that it uses redirects to go to the real url. All visits to the 'go' urls are tracked, so you can see how often a certain 'go' url has been visited. You can optionally force a disclaimer to be displayed before the user is redirected.