Previous and Next Node modules allow for node displays to incorporate a previous and next that will cycle through a content type(s).
- Custom Pagers - Custom Pagers allows administrators to define context-sensitive previous/next pagers for any node type. The list of nodes to be cycled through is generated by a user-selectable view, and each pager can be displayed above or below the node body or in a sidebar block. This makes it possible to duplicate the paging functions of forum.module and book.module, as well as more complex stuff like comic strip navigation. Requires token.module and views.module. Drupal 6 and Drupal 7 is coming very soon.
- Flippy - Flippy is an ultra-simple module that generates previous/next pagers for content types. On the Node type administration screen, you can turn Flippy on or off for each content type. It'll generate a unique pager for each content type, so you can page through Articles or page through Blog posts, but you can't page through all nodes on the site. Drupal 7 only.
- Free Pager - This module allows you to use Views to create simple forward/next pagers. It provides a new display, Pager block, which will create a block with pager for items listed in the view. Due to the fact that it's used as a Views Display, it offers many advanced options, like taxonomy-awareness. It also allows navigation of other things than nodes.
- Previous/Next API This module allows you to know the previous or next nodes for any given node. This is very useful for providing navigational links to the user without the expensive queries required to dynamically deduce such information on the fly.
- Views navigation This module adds next and previous links on content pages when accessed from a view. It is intended for dynamic and/or paged view results, where the result set changes according to exposed filters, current user access rights,...
You may need this module if the content which comes after a given content depends on context, and more precisely depends on which content list you came from.