Easy Footnotes lets you quickly and easily add footnotes throughout your WordPress posts using a simple shortcode in the text editor.

Add hover text (aka tooltips) to content in posts. Handy for providing explanations of names, terms, phrases, abbreviations, and acronyms.

Magic Tooltips For Contact Form 7 is a WordPress Contact Form 7 tooltip plugin that let's you add tooltips to the Contact Form 7 form fields.

WordPress tooltip lets you add tooltips to content on your posts and pages.

Add tooltips from "WoWHead" (http://www.wowhead.com/), useful for blogs etc. about World of Warcraft.

iWR tooltip plugin lets you add tooltips to your post or page or in your template files.

Disable the pointers (tooltips) shown on WordPress admin screens

Automatically replace your posts' keywords on your website with an internal link and tooltip.

Easily add Bootstrap popover to your site. You can create custom post and use as popover anywhere in your site with short code.

An extension to make accessible tooltips easily using the awesome TippyJS library (https://atomiks.github.io/tippyjs/).

Simple plugin that allows you to easily add tooltips to your posts using a shortcode.

Adds tinytips tooltips to links on your site. Comes with different themes.

An easy way to implement tooltip element in the WordPress Block Editor

This plugin allows you to automatically generate tooltips in the content of your posts, pages, and custom post types. Specifically, the plugin applies …

Add tooltips to your content easily using a simple shortcode!

This is an awesome free Tool Tip Wordpress Plugin.

Adds Wowhead (http://www.wowhead.com) powered tooltips to your WordPress posts & pages using both shortcode and long links.

Inventive gravity forms tooltips, transforms gravity forms description into a tooltip.

Tooltip Crazy adds a new button to the TinyMCE for adding tooltips to your posts and sites via shortcode.

Easily turn links to Minecraft items into fancy pop-out tooltips.