Inspector is the tool which mimic display dimension between selected and hover element. It would be good for designers, QA

An easy way to inspect the CSS of any element with only hover over, and copy its entire CSS with one click.

An undetectable, lightweight extension that automatically blocks all ads and bypasses paywalls.

最简单的图片Hover放大插件，即安即用

On any Amazon product page click the extension icon to check price and sales rank history.

Add threat intelligence hover tool tips. IPv4, MD5, SHA2, CVE, FQDN or add your own ThreatIntel IOC. Use any REST API.

Showing CSS attribute on element hover

Show URLs when you hover over links into a webpage.

Photos, avatars and images are scaled when hovering over the mouse.

Preview documents, videos, music, and more with a mouse hover.

Show super-sized avatars and photos when you run your cursor over the thumbnail.

Useful extension to let you sort, filter, hover for info when using JIRA Agile Board. Getting the info you need at your fingertips…

Shows a popup with an image preview when hovering over link.

KnockoutJS Context Hover - Development and debugging assistant for Knockout JS. Tested on: 3.4.2, 3.1.0, 2.2.1

Hide media for WhatsApp™ Web, hover to see it

Reveals password on mouse hover

Be native in pronunciation using text modifications. Open a pop-up instantly by hovering over a word. Web, PDF, Video, Anki

Flip image on hover.

Pushover for Google Chrome, with your own key and token.

Jira HotLinker, quick access to Jira metadata when hovering over ticket numbers!

This extension helps to translate English words to Tamil by moving the mouse hover the words.

When you hover with your mouse over a gfycat link you'll see the video popup and play. Much like HoverZoom for a gif.

Extension shows image size on hover in a minimalistic way

View Images on Reddit without the need to open new tabs or click away. 100% SPAM Free.

Lookup Chinese word by hovering over the word. Just that simple! And also get a full list of words you have looked up. Print them…

Magnifying glass, also Hover Zoom, just enlarges any part of your screen for easier use.

Zoom images/videos on all your favorite websites (Facebook, Amazon, etc). Simply hover your mouse over the image to enlarge it.

Display information about an image.

Quickly view any NBA player's stats by hovering over their name. Click and Roll analyses web pages to find the names of over 4500…

Hovering the price on amazon title will appear with money that dealer you (as a dealer) earn after amazon will minus its fee.