Related Widgets Plugin For WordPress

The Related Widgets plugin for WordPress introduces multi-use widgets that allow you to list related posts or pages.

To use the plugin, browse Appearance / Widgets, insert a Related Widget where you want it to be, and configure it as appropriate.

You can optionally filter the results by category or section.

On post and page tags

The plugin builds on your tags to generate lists of related posts and pages. For this reason, it allows to you add tags to your pages, even though they’re not otherwise used by WP.

Note that the plugin manages page tags in a manner that does not disrupt WP. As a result, page tags will only display, when using the Semiologic theme, when at least one post also has that tag. The tags are definitely used, however, when scanning for related posts and pages.

That the plugin’s algorithm is smart enough to spot related tags. In other words, if post A shares tags with posts B and C, but not post D; and B and C share a tag with D; then the plugin may decide that A is related to D.

At the other end of the spectrum, keep noise tags in mind. Be it signal processing, SEO, or anything else, information comes from differences, not from similarity — it’s difficult to detect a dark gray dot on a black board, whereas it’s easy to spot a white dot. If all of your posts share a small set of tags, there is no information to extract and everything becomes noise. And these noise tags end up ignored.

This post/page in widgets

This plugin shares options with a couple of other plugins from Semiologic. They’re available when editing your posts and pages, in meta boxes called “This post in widgets” and “This page in widgets.”

These options allow you to configure a title and a description that are then used by Fuzzy Widgets, Random Widgets, Related Widgets, Nav Menu Widgets, Silo Widgets, and so on. They additionally allow you to exclude a post or page from all of them in one go.


This package is part of Semiologic Pro, and is access-restricted.

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Frequently Asked Questions


The Semiologic forum is the best place to report issues.

Change Log

Version 3.6 =

  • Updated to use PHP5 constructors as WP deprecated PHP4 constructor type in 4.3.
  • WP 4.3 compat
  • Tested against PHP 5.6

Version 3.5 =

  • WP 4.0 compat

Version 3.4.1 =

  • Use more full proof WP version check to alter plugin behavior instead of relying on $wp_version constant.

Version 3.4 =

  • Clear caches on WP upgrade
  • Code refactoring
  • WP 3.9 compat

Version 3.3.1 =

  • Further tweaks around the widget context caching

Version 3.3 =

  • Improved context caching to work better with page revisions and auto-saves.
  • WP 3.8 compat

Version 3.2.1 =

  • Fix PHP Warning 'Object of class related_widget could not be converted to string' in /wp-content/plugins/sem-cache/object-cache.php on line 133

Version 3.2 =

  • WP 3.6 compat
  • PHP 5.4 compact

Version 3.1.1 =

  • Fix caching issue with "This Page in Widgets" not refreshing on title or description updates

Version 3.1 =

  • WP 3.5 compat
  • Recoded for removed _get_post_ancestors function

Version 3.0.5 =

  • WP 3.0 compat

Version 3.0.4 =

  • Remove php5-specific code
  • Further cache improvements (fix priority)

Version 3.0.3 =

  • Slight algorithm improvement
  • Improve caching and memcached support
  • Apply filters to permalinks

Version 3.0.2 =

  • WP 2.9 compat
  • Fix hard-coded DB tables

Version 3.0.1 =

  • Fix an occasional warning

Version 3.0 =

  • Complete rewrite
  • WP_Widget class
  • Localization
  • Code enhancements and optimizations