X3 offers a range of plugins that are available for pages, or in your content.
Attach an image as an introduction to the page.
Use the intro-plugin to attach a solid color or gradient as introduction to the page.
An example using the gallery slideshow set to "use as intro" for a nice start-page effect.
Video Intro Plugin
The video-intro plugin allows you to add a video at the top of page.
Image Comparison Slider
A content plugin to interactively compare two images visually.
Content Carousel Plugin
Use the content carousel plugin to add html elements in an interactive carousel.
Use the popup plugin in your content to include links that open in popup windows.