1.
animate hover
http://www.joompad.be/index.php/modanimatehover.html

2.
Simple Animated Hoover Effect
http://recipes.joomla-monster.com/animated-hover-effects-for-images/#.V3YLoRKLDvs

3.
FavImageHoover
http://extensions.favthemes.com/favimagehover

4.
JE Image Caption
http://jextensions.com/demo25/e/caption

......

9.
Folow the kitty
http://codepen.io/lucasmotta/details/tIoHe

10.
Simpe Hoover Effect
http://joomla30.webkul.com/simplehover-effect.html

11.
Simple Stack Effects
http://tympanus.net/Development/StackEffects/

12.
css3 translation
http://codepen.io/Hornebom/details/pgioy

14.
dynamic grit translation
http://tympanus.net/Development/DynamicGrid/

15.
Caption Hover
http://tympanus.net/Tutorials/CaptionHoverEffects/

16.
Elastic Stack
http://tympanus.net/Development/ElasticStack/

17.
Gallery Hover Expand
http://codepen.io/furfoxsnakes/details/zwluC

18.
Animated Responsive Image Grid
http://tympanus.net/Development/AnimatedResponsiveImageGrid/

Google Search
https://www.google.at/search?q=jooml3+extensions+image+hover+&ie=utf-8&oe=utf-8&client=firefox-b&gfe_rd=cr&ei=Wwt2V8TQIs3b8AfR_pPICA

http://www.webdesigndev.com/free-image-hover-effect-plugins/