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Closy
Requires Restart
Provides close all blank/duplicate tabs and Close all tabs to the left/right plus many other options.
Perfect View
Image viewer with smooth dynamic zoom, pan and rotate. View slide shows of images or files and capture page elements and tab content. Apply image filters. Save images in various formats.
SyncKolab
Requires Restart
SyncKolab can synchronize your calendar, address book and tasks against an IMAP server in Kolab formats version 1 (vCard/iCal) or version 2 (XML) or turn your Thunderbird/Lightning into a native Kolab Client (http://kolab.org).
No need flash plugin on embeded youtube movies
No need flash plugin on embeded youtube movies
Extra Format Buttons
Requires Restart
Adds a font size (in pixels), strikethough, subscript and superscript buttons to Thunderbird's Compose Window.
Google Privacy
Requires Restart
Make some popular websites respect your privacy settings.
Please see the known issues below!
Link Properties Plus
Requires Restart
Provides extended link properties: size of linked file, last modified time, etc.
XL2Report
Requires Restart
Report und grafische Auswertung für Messungen mit dem XL2-Audio und Akustik Analyzer von NTi Audio
OpenMixTools
Requires Restart
convert session files of yamaha consoles, print channel lists and reports
Browser Backgrounds
Requires Restart
Browser Backgrounds is the new Firefox extension that lets you install backgrounds directly on your browser.
Markdown Viewer
Requires Restart
Markdown document viewer.
Allows to visualize formatted markdown documents in browser.
Tab Counter
A simple extension that counts the number of open tabs per window and displays the count in the toolbar...
RequestPolicy v0.5 Legacy
Requires Restart
Be in control of which cross-site requests are allowed. Improve the privacy of your browsing by not letting other sites know your browsing habits. Secure yourself from Cross-Site Request Forgery (CSRF) and other attacks.
DOM Inspector Plus! [dm]
Requires Restart
Improved DOM Inspector! [dm version]. Box Model new layout & more data, see screenshot!. Horizontal scroll for Dom-Tree, and some more.
Inspects the structure and properties of a window and its contents.
To create your own collections, you must have a Mozilla Add-ons account.