Download You-Tube videos.
Anonymous web browsing.
BitRef will help you view the current balance of any Bitcoin address.
Distill runs in your browser to check monitored pages for changes.
Download all items in a webpage that match a pattern.
Download all the links or images contained in a webpage.
Displays the Exif and IPTC data in local and remote JPEG images.
Displays a country flag depicting the location of the current website’s server and provides tools including safety checks, whois, translation, similar sites, validation and URL shortening.
Search the Google cache.
HTTPS Everywhere is a Firefox extension that encrypts your communications with many major websites, making your browsing more secure. ♥
Opens all images from a page into a new tabbed window.
Adds zoom and rotation functionality for images.
Extracts all links from web page, sorts them, removes duplicates, and displays them in a new tab for inspection or copy and paste into other systems.
Capture the whole web page, a part of it or the whole browser window.
Privacy Badger automatically learns to block invisible trackers. ♥
Cache / mirror search.
Loads Live Bookmarks and scrolls their entries across your screen while you surf the web.
ScrapBook is a Firefox extension, which helps you to save Web pages and easily manage collections.
Searches the current website using search engine of your choice.
Sputnik is an extension to quickly and easily search IPs, Domains, File Hashes and URLs using free OSINT resources.
The extension adds a context menu item so you can search for an image to find out which website it originated from and other sites that have used the same image.
Detects dead pages, 404s, DNS failures & a range of other web breakdowns, offering to show archived versions via the Internet Archive’s Wayback Machine. In addition you can archive web pages, and see their most recent & first archives.
Search for copies of images via a right click menu.