Template Showcase is a responsive Module you can add an image for your template preview with options to  add buttons for demo and info purposes.
On hover, it has an overlay where you can add your description along with demo/Info buttons and links to for preview.
The Module is fully customizable. Title color, icon of your choice, title background, description color, button color, button text color, and the module can be used for about any other type of image and links project that you would like.