Extensions that I use for everyday navigation, cover most of the user's needs.
Enhance Flickr with a compilation of useful Greasemonkey scripts.
Adds advanced search capabilities to the Firefox address bar. Supercharge the "Awesome Bar" with instant search results that appear as you type!
An extension that allows for the use of dynamic commands in Firefox.
FfChrome is a nifty little addon that slims and trims your context menu on the fly for simplicity, ease of use, easy access and eliminates the clutter. One addon that makes your day-to-day life easier by increasing productivity.
Note: Not compatible with Firefox 25+ (try FindBar Tweak instead). In Firefox 24 and below, adds a find bar button that allows you to search for a word/phrase on a web page and lists the results. Also displays the total number of matches found.
Note from Mozilla: This add-on has been discontinued. Try FXChrome instead.
Chromifox Basic is a coat of chrome for Firefox.
This extension adds a button ("Dump list") to the Add-ons window. When this button is pressed, a new window is opened with the list of installed extensions, themes or plugins...
Note from Mozilla: This add-on has been discontinued. Try Google Minimalist instead.
CustomizeGoogle enhances Google by adding information and removing unwanted information.
Fission combines address bar and progress bar (Safari style). This makes the progress bar more visible and allows for a nice visual effect.
Drop files into attachment boxes instead of browse for them or type in the filename. Drop multiple files and fill all the entries. In some websites it allows to add new upload files: in Google Mail is possible to drop the files directly over the...
Add useful extra features to Google Reader, like feed favicons, inline article previews, and unread counts in your browser tab with Better GReader.
Adds collapsible header and sidebar, event title text wrap, colored weekend days, week numbers, and skins to Google Calendar.
Note from Mozilla: This add-on has been discontinued. Try Evernote instead.
Clipmarks lets you clip and share specific parts of articles, or anything else you read.