Levente Hunyadi's free Joomla image slideshow extension, Showplus, is powered by nice sliding and display effects. 6 different in-build transitions are included. Showplus works with Mootools and includes no-flash. The extension is very flat, loads your images in few seconds. Links can be added to every image. You can also activate the integrated shuffle mode or display a horizontal or vertical navigation bar. All images can be ordered automatically by filename or modification date. The download is free. Showplus is native to Joomla 2.5 and Joomla 3.x.
AS Templates 002058 is best suitable for Joomla business websites. You can use it for every device, the in-build Bootstrap Framework makes this possible. ASTemplates provide it in a free version with 16 module positions, 10 standard web safe fonts and 30 + Google Web Fonts. The template package includes also the AS Art Slider and the AS Responsive Menu, two useful Joomla extensions of AS Templates. You can display your location by the integrated Google Map plugin and integrate AcyMailing to inform your user about your offers by a newsletter or e-mail. The template is also available in a commercial version with much more features. You can use it with Joomla 3.x.
If you want to realized a Joomla website with MijoShop, than Arasta by Optimum Theme could be your template. Besides MijoShop its supports also another great Joomla 3rd party solutions, like EasyBlog, K2 or JomSocial. Its layout based on Joomlart's T3 Framework and provides 5 preset styles and multiple module variations. You can also use Optimum Theme's Joomla extension, OT Slideshow and OT Newskit, with it. Arasta is native to Joomla 2.5 and Joomla 3.1. The download is commercial.