by
cfischer83
5 (2 reviews)
Similar Posts Ontology
Show a list of related posts that are similar to another post.
Similar Posts Ontology ranks #20,893 among WordPress.org plugins with 50+ active installations, is #465 of 1,419 in the Taxonomy category, a 5/5 rating from 2 reviews, and was last updated Dec 16, 2025. Data from WordPress.org, refreshed twice daily — see methodology.
Tested up to WP 6.9 (Current: 7.1.1)
v2.1
Current Version v2.1
Updated 9 months ago
Last Update on 16 Dec, 2025
Refreshed 10 hours ago
Last Refreshed on
#465 of 1,419 in Taxonomy
Top 50% by installs
Rank
#20,893
-99 this week
Active Installs
50+
-3.8%
KW Avg Position
70.5
0.5 worse
Downloads
3.4K
+3 today
Support Resolved
0%
—
No change
Rating
100%
Review 5 out of 5
5
(2 reviews)
Next Milestone 60
50+
60+
1,782
Ranks to Climb
-
Growth Needed
8,000,000
Active Installs
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Rank Changes
Current
#20,893
Change
Best
#
Downloads Growth
Downloads
Growth
Peak
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5.0
2 reviews
Overall
100%
5
2
(100%)
4
0
(0%)
3
0
(0%)
2
0
(0%)
1
0
(0%)
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- Version
- 2.1
- Last Updated
- Dec 16, 2025
- Requires WP
- 4.0.0+
- Tested Up To
- 6.9
- PHP Version
- N/A
- Author
- cfischer83
Support & Rating
- Rating
- ★ ★ ★ ★ ★ 5
- Reviews
- 2
- Support Threads
- 0
- Resolved
- 0%
Keywords
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Frequently Asked Questions
Common questions about Similar Posts Ontology
There are two aspects to it. First, it finds all similarly tagged, categorized, and otherwise taxonomically created content on your site, then sorts it by what has the most similarities. Second, if there is a tie between two posts it will give the edge to the newest content, or content posted closer to the time your current post was posted, depending how you configure it.
Ontology is the study of the nature of 'being'. This plugin uses the ontological philosophy of determining an entities placement within its own 'type' by studying the entities relationships.
You can use this in two ways. Either by calling pk_related_return() in your theme or by placing the widget on your site. If you are using the widget, remember that it only works on any "single" page (where is_single() would return true). The pk_related_return() can theoretically work anywhere as long as you provide a proper post ID. Try var_dump() with pk_related_return() and look at the description for proper usage of this function.
This issue may be your taxonomies. The content for which you're trying to find related content needs to have tags, categories, and/or custom taxonomies. Also, to properly find your content, tags/categories/taxonomies must be used on the related content as well. The more you intentionally use your tags and categories, the better your results set will be.
