OxyExtras Premium Oxygen Addon offers a wide range of features to enhance Oxygen-based websites. Here is a summary of some of its key components and functionalities:

1. Animated Counters: Visually appealing counters that animate as they enter the viewport with customizable animation durations.
2. Alert Boxes: Versatile alert boxes to display messages, either fixed to the viewport or inserted into content.
3. Off Canvas: Slide-in off-canvas wrapper that allows for trigger setting, transition speed adjustment, and element insertion.
4. Reading Progress Bar: Option to style and position a reading progress bar within an article.
5. Author Boxes: Create author profiles with images, bios, and links to author archives and external websites.
6. Adjacent Posts: Dynamic links to previous and next posts with style options for featured images, titles, icons, and labels.
7. Back to Top: Easy-to-use back-to-top button with customizable scroll speed and position.
8. Header Search: Expanding search forms for headers with full-screen, overlay, or under-header placement options.
9. Fluent Form: Visual styling of Fluent Forms and Fluent Forms Pro within Oxygen.
10. Social Share: No-JS social share links styled visually for Facebook, Twitter, LinkedIn, Email, Pinterest, WhatsApp & Telegram.
11. Read More / Less: Component for collapsing and expanding content blocks.
12. Lottie Animations: Integration for Lottie animations with user interactivity controls.
13. Animated Burger Trigger: Animated burger menu buttons for triggering Modals, Off-Canvas, or Slide Menus.
14. Post Modified Date: Absolute and relative time options to display when articles were last updated.
15. Preloader: Visually create preloaders to hide unstyled content flashes or display elements on page load.
16. Mini Cart & Counter: Components to add different types of AJAX Woocommerce carts to Oxygen projects.
17. Carousel Builder: Visual builder for creating carousels with Repeaters, Easy Posts, Product Lists, or custom elements.
18. Content Switcher: Allows visitors to switch between two variations of any element.
19. Pro Media Player: Lazy loading videos and audio with customizable UI.
20. Circular Progress: Build SVG circular progress bars that animate as users scroll.
21. Mega Menus: Accessible mega menus populated with various elements, including menu items from WP menus.
22. Lightboxes: Display dynamic content via AJAX, iFrames, and image/video lightboxes within existing content.

These components collectively offer a wide array of options to improve design, functionality, and interactivity on Oxygen-based websites.