SEO Internal linking (page, post, category). Automatic SEO for website
Adds smooth scrolling to anchors, that you can easily set in the visual editor.
This plugin deactivates clicks on hyperlinks with an optional popup message.
This plugin allows you to permalink (i.e., bookmark) to content on Twitter Bootstrap tabs (and now content inside collapsible components) via hash tag
Insert simply many anchors to pages, posts and custom post type.
Check content and create a widget menu with links that point to words between the HTML tags you choose.