The WMT Media Grid - Joomla Component has a responsive layout and 4 predefined themes that you can use. Take a look Live Preview that is provided, where you can see in which way you can use this grid.
The WMT Media Grid can have unlimited number of images. When a thumbnail is clicked the lightbox can display images, or videos loaded from YouTube or Vimeo.
|Pro Version Unlimited Domains: Support only for one domain
|Pro Version Unlimited Domains: Support for all domains