Shawn Parker

This is a simple plugin to put the <code></code> buttons back in the WordPress editor Toolbars.
The only caveat to using this plugin is that it uses functionality that has been in the WordPress core but hidden since the NextPage button was removed not long ago. All the functionality for handling the <code></code> tag via the editor toolbar is there in WordPress core. The JavaScript functions are loaded as well as the CSS, but the buttons are not added to the toolbar. This plugin adds those buttons to the toolbar.
If you’re OK with having functionality that could break in the next revision to WordPress then use this until anything does change in WordPress.

NextPage Buttons

The NextPage button is a simple plugin that brings back the NextPage button in the WordPress editor toolbar.

Linchpin

Aaron Ware

Create next/previous links for pages. Adds the functions next_page_link() and previous_page_link() which links sibling to page(s). 
If your page doesn’t have a direct sibling the plugin will try to go out to the parent of the current page and get the parent’s next sibling. If enabled the plugin will also loop from end->beginning and beginning->end.
This plugin is great for utilizing WordPress for presentations. If you create a set of pages. This plugin will cycle through them. Additionally you could utilize some javascript to create a timer to automatically go from page to page.
This plugin is based on ‘Next and Previous Page not Post’ by Matt McInvale. Although it’s gone through almost a complete rewrite from his release in 09. This plugin is a bit more optimized to take advantage of newer plugin techniques. Includes code from banesto as well regarding references to grandparent pages. Also added in additional features such as $args array for easier customization down the road. This plugin is great for utilizing wordpress as a presentation tool.
<h4>See the FAQs Page for Snippets and Examples</h4>

Linchpin – PrevNextPage

Create sibling page links. Similar to next_post_link() & previous_post_link() but for pages. Great for utilizing Wordpress for Presentations or it …

NextPage Buttons vs Linchpin – PrevNextPage