O'Notes Requires Restart
Notes like in Opera 12
QuickJava Requires Restart
Sun Cult Requires Restart
Worldwide Sunrise, Sunset, Twilight, Moonrise and Moonset...
Restore "Click to Play" ability of per-element for Firefox 36 and above.
Form History Control Requires Restart
Manage form history entries (search, edit, cleanup, export/import) and easy text formfiller.
Auto-save text entered in any form while typing to allow fast recovery when disaster strikes.
Control for which webpage form history is saved or not.
Rainbow Color Tools Requires Restart
This addon is no longer being updated and won't work with new versions of Firefox. See the Colorzilla addon for a replacement: https://addons.mozilla.org/en-US/firefox/addon/colorzilla/.
Color tools for web development.
CantoFish Requires Restart
CantoFish is a popup Cantonese-English dictionary for Firefox. It contains over 200,000 entries and works with both traditional and simplified Chinese characters. The Yale and Jyutping romanization systems are supported, as well as Mandarin pinyin.
This extension prevents Google and Yandex search pages from modifying search result links when you click them. This is useful when copying links but it also helps privacy by preventing the search engines from recording your clicks.
Bdword English to Bengali Dictionary Requires Restart
Find English to Bengali Meaning by clicking twice on any word.
Adds drop-down list to switch sidebars
Double-click action for Firefox -
double-click Link, Bookmark/History to open in new tab (emulate ctrl+click).
Manage site-specific zoom levels and color settings
Classic Bookmarks Button Requires Restart
Mainly for Firefox 29+!
This add-on restores bookmarks menu known from older Firefox versions on Firefox Australis.
Use 'Customize (Toolbar)' menu to place the new bookmarks button on your favorite toolbar.
Sync engine for Stylish with backup / restore facility.
Baidu Tieba Harmonizer Requires Restart
A simple tool designed to circumvent Baidu Tieba's censorship.
Watch age restricted YouTube videos without signing in.