itgoldman

This plugin shows on hover sub menus of recent posts, pages and custom post types. 
It’s a simple no-settings out-of-the-box solution for better productivity when using the wordpress admin.

ITG Admin Hover Menus

Shows on hover sub menus of recent posts, pages and custom post types.

julian.weinert

WARNING FOR VERSION 1.4 USERS: PLEASE UPDATE TO THE LATEST VERSION!
Hover Image makes you able to add hover-images to your WordPress Posts and Pages. 
Simply use the shortcode [himage] [/himage] and place two images inside. 
The first image can be hyperlink, this will be used for the “himage” too.
If you like Hover Image and wanr to use it in your language, feel free to contact me to create translations! Thanks

Hover Image

Hover Image provides an easy-to-use functionality to change image on hover.

ITG Admin Hover Menus vs Hover Image