show-site-ip

Firefox extension that shows the site's IP address in the browser's address bar. Just hover your mouse over the icon to display it or click to copy.

scroll-to-top-bar

Firefox/Chrome extension that add scroll to top bar when hovering over a scrollbar of the page.

scroll-to-top-and-back

Firefox extension that scrolls to the top of the page by clicking on the browser action icon (or page action icon) and scroll to the previous position by clicking on it again