Amaury Balmer

For WordPress 2.3 and upper : Please try and use <a href="https://wordpress.org/extend/plugins/simple-tags/" title="The best tagging plugin for WordPress 2.3 !">Simple Tags Plugins</a>
The two mostly used tagging plugins are the Ultimate Tag Worrior (UTW) and Jerome’s Keywords.
I think most people use UTW, however especially its performance has been criticized in the past. Also, it does not provide a auto-complete type-ahead dropdown menu when tagging posts but it always displays all tags of the entire WordPress installation which can be quite annoying if you have really many tags.
Jerome’s Keywords is unfortunately still in beta and it seems that the project will not be continued.
With Simple Tagging Plugin, I’ve coded another tagging plugin for WordPress which is based on Jerome’s Keywords plugin and can ”’import”’ all your tags from UTW or Jerome.
It provides you with everything you need for tagging, in the following a list of the features:
<ol>
<li>Import your tags from UTW or Jerome’s Keywords</li>
<li>A field for tagging your posts easily incl. type-ahead feature</li>
<li>Display Tags of the current posts</li>
<li>A tag cloud with various options</li>
<li>Displaying a list of related posts</li>
<li>Related Tags feature when browsing your tags (idea stolen from del.icio.us)</li>
<li>Adding tags (& categories if enabled in the options) as meta keywords in the header</li>
<li>Adding tags as categories in the feed (this will index your tags with Technorati)</li>
<li>Tag management: rename tags, delete tags, replace tags, convert categories to tags, etc.</li>
<li>Support of embedded tags ([tags]tag1, tag2, tag3[/tags]): You can tag posts directly by entering the tags in the post using [tags]tag1, tag2, tag3[/tags]. This makes it possible to tag posts when you use an external blogging application like BlogDesk or Windows Live Writer.</li>
<li>A feed (RSS, RSS2, Atom) for any tag</li>
<li>Tag cloud for specific category</li>
<li>Automatically display the tags of a post after the post content</li>
<li>Generate Tag Tabs with jQuery !</li>
<li>Manage Tags Cloud in FULL WordPress Mu Site !</li>
<li>List posts from all blogs for a specific tags in WordPress Mu !</li>
<li>Edit mass tags ! 20 posts at the same time !</li>
</ol>
And more…
<h3>Arbitrary section</h3>
New in version 1.7: 
 * Reorganise Admin Options 
 * Add Tag Tabs 
 * Fix lots of bugs. 
 * Fix test $wp_version 
 * Atom Feed fix 
 * Add mass edit tags ! 
 * Fix a security problem
New in version 1.6.8.1: 
 * Fix a important bug with related posts
New in version 1.6.8: 
 * Fix bugs version 1.6.7 
 * Fix wrong counter tags 
 * Admin bugs. (checked) 
 * Minor optimisation 
 * Site wide tag cloud for WordPress Mu + List of posts. 
 * Add translation: Russian & Czech
New in version 1.6.7: 
 * Fix bugs version 1.6.6 
 * Compatibility with MySQL 4.0 
 * Optimisation
New in version 1.6.6: 
 * Add auto color tags cloud (no CSS, Colorpicker in admin) 
 * Add Turkish translation 
 * An option to limit the number of related tags 
 * A possibility to call/display the related posts outside a loop 
 * Tags Feed 
 * limit the age of what posts show up in the tag cloud 
 * An option to automatically display the tags of a post after the post content 
 * Limit or exclude category or categories in Tag Cloud 
 * Ability to exclude specific categories from the related posts 
 * Tag Cloud for one category
New in version 1.6.2: 
 * Related Posts now work…
New in version 1.6.1: 
 * Internationalisation (french, english, german) 
 * Compatibility with WPmu

Simple Tagging

For WordPress 2.3 and upper : Please try and use [Simple Tags Plugins](http://wordpress.org/extend/plugins/simple-tags/ "The best tagging plugin  …

Peter Raschendorfer

The Smart Hashtags Plugin allows you to use #hashtags, @usernames and $cashtags in your posts
This plugin uses the <a href="https://codex.wordpress.org/Posts_Tags_Screen" rel="nofollow ugc">WordPress Tag system</a> to automatically convert a #hashtag into a Post Tag. Each #hashtag is added as a “normal” tag (without leading hash) to the post, so it is fully compatible with existing tags!
<h3>Retired Plugin</h3>
Development, maintenance and support of this plugin has been retired in october 2023. You can use this plugin as long as is works for you.
There will be no more updates and I won’t answer any support questions. Thanks for your understanding.
Feel free to fork this plugin.
<h3>Usage</h3>
Just type anywhere in a post
#hashtag 
This adds “hashtag” as tag to the current post and on links to tag archive page for “hashtag” when showing the post.
+#hashtag 
Use +#hashtag to only link to a tag archive page without adding “hashtag” as tag to the post. When showing the post the link is showed as “#hashtag” (without “+”). If the tag does not exist the text remains unchanged and no link is created.
##hashtag 
Use duplicate ##hashes to tell the plugin that this word should not be converted into a tag. Duplicate hashes are replaced by a single hash when showing the post.
@username 
This creates a link either to the Profile Page or the Website of User “username”. The usage of @usernames can be activated optionally. If the username does not exist the text remains unchanged and no link is created. It is highly recommended to use @nicknames instead of @usernames to enhance security.
@@username 
Use @@username to avoid link creation. When showing the post this is displayed as “@username” without link (@username feature has to be activated).
$cashtag 
This creates a link to the concerning stock symbol at MarketWatch, Google Finance, Yahoo Finance or StockTwits. The usage of $cashtags can be activated optionally. $cashtags link to the concerning stock symbol at MarketWatch, Google Finance or Yahoo Finance. Notice: stock symbols can not be validated, using a invalid stock symbol will cause an not found error on the target site.
$$chashtag 
Use $$cashtag to avoid link creation. When showing the post this is displayed as “$cashtag” without link ($cashtag feature has to be activated).
<h3>WordPress Security</h3>
If you activate the @username feature it is highly recommended to use @nickname instead of @username!
<h3>Post Types and Section Types</h3>
It is possible to use #hashtags, @usernames and $cashtags on Posts, on Pages and on Custom Post Types within Content, Title and Excerpt. Activate only the Post Types and Section Types you want to be processed to avoid unnecessary processing for best performance.
<h3>Formatting links</h3>
Additional CSS Class(es) to add to the #hashtag and @username links can be configured on the plugins setting page.
<h3>Display of links in front end</h3>
Optionally all symbols (#, @, $) can be removed from the links generated in front end.
<h3>Display of Tags in front end</h3>
There’s an option to automatically add a hash symbol in front of tags (e.g. when using the Tag Cloud Widget).
<h3>Plugin Privacy Information</h3>
<ul>
<li>This plugin does not set cookies</li>
<li>This plugin does not collect or store any data</li>
<li>This plugin does not send any data to external servers</li>
</ul>
<h3>For developers</h3>
Use <code>do_hashtagger( $content )</code> in your theme files to process #hashtags and @usernames in $content.

Smart Hashtags [#hashtagger]


This works great on several of my sites. Thanks for all your work on it before retiring!


Simple and useful

Allows you to use #hashtags, @usernames and $cashtags in your posts. #hashtags are automatically added as post tags. Highly customizable!

Simple Tagging vs Smart Hashtags [#hashtagger]