Xmarks is the #1 bookmarking and open tab add-on. Keep your bookmarks, and open tabs backed up and synchronized across computers and browsers. Mobile phones with Premium access. Utilize LastPass to sync passwords!
Use this extension to save things you see on the web into your Evernote account. It provides a toolbar button and context menu to add an article, selection, URL or an entire page.
Displays the Exif and IPTC data in local and remote JPEG images.
Lets you load pages in IE with a single right-click, or mark certain sites to *always* load in IE.
A no-clutter image viewer for Firefox that allows you to zoom, rotate and display images/videos against a custom background. ImageTweak is a must-have addon for any photographer or photography-loving user.
Adds a context menu item for viewing images using advanced controls: The image is opened in a new tab which also contains a thumbnail view of the image used to scroll around more easily, zoom controls with various zoom levels etc.