J2 Store is a multilingual online shop extension for Joomla 2.5, which will be delivered in a free version with a easy to configurable administration of your products. You can set all product features, like price, tax, attributes while creating an product. The two commercial versions offer lots of more features and special online payment plugins for Paypal, Authorize.net, SagePay, Ogone and DIBS Payment. You can get special languages packages in spanish, bulgarian and dutch. The download is free, after registration on developers website.

Avatar Slide Skitter comes with a nice thumnails preview, more than 20 transition- and multi select effects. You can display a config number of images and customize the time display for every image. Furthermore, JoomAvatar provides this image slideshow module for Joomla 2.5 with a easy to setable module admin, which offers you the possibilty to change a lot of module features, like the module size, navigation style or the position of the play/pause button, their. The download is free, after your agreement to the developers condition on the website of JoomAvatar. 

Phoca Gallery is a free mulitlingual gallery extension for Joomla 2.5, which works also fine in former editions, Joomla 1.5 and 1.7. Phoca equipped Phoca Gallery with a lots of special modules, like Gallery Categories, Gallery Categories Map, Gallery Categories Detail or special gallery modules for Noob-, Floom- and Nivo Slider, which you can download on developers website. Also the language packs for arabic, brazilian, bulgarian or catalan are avaiable their. A great feature is the extended online documentation. Furthermore, Phoca build special free templates for Phoca Gallery, which are also avaiable on developers website.