Shack Toolbox is the best way to show pop-ups and modals on your Joomla site. Shack Toolbox has over a dozen media and marketing integrations, including Twitter, Google Maps, Joomla articles, and much more.
Shack Toolbox has many different design and layout options for your content. You can choose from many different themes. You can also select from effects that include pop-ups, lightboxes, slide-in, bottom bars, fade-ins and sidebars.