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Super Mario Cross
Requires Restart
The legendary arcade game that has survived the ages and can still be found today in modern arcades. You may have played this game when you were a kid and want to have a bit of fun remembering what it was like.
JSON Inspector
Inspect JSON object from a URL or entered data.
Requires either DOM Inspector or DOM Inspector Plus! [dm] extension.
Switch Message Colour
Requires Restart
Adds a Toolbar-Button to Thunderbird to switch between the mails' original colouring and your user defined colouring.
Clickbank Search
This extension is the most advanced tool to reach Clickbank Store with ease get your to favorite products.If you right-click on some selected text, then it will give an option to search the selected text.
MALA Hindi Spell Checker by MCRPV, (Anurag Seetha)
Requires Restart
MALA (Makhanlal) Hindi Shabd Shodhak to check Spelling of Hindi Unicode Text by Makhanlal Chaturvedi National University of Journalism & Communication, Bhopal, India. Chief Developer - Dr. Anurag Seetha. The program is Released Under the GNU GPL V 3
DevPrefs
Automatically sets all preferences for Firefox addon developer production environment.
sepsis-console
Requires Restart
A general-purpose JavaScript console for all Mozilla toolkit applications.
Shift+LeftClick XUL
Requires Restart
This simple addon has only this functionality, nothing else: it opens links in a new active tab with Shift+LeftClick (left mouse button click).
Better use https://addons.mozilla.org/ru/firefox/addon/shiftleftclick-opens-links-in-/ for FireFox.
Shop Companion
Access to full-resolution product images and videos on various shopping sites is easy with this add-on. It adds links to the largest/xxl/best-size version of product images on various shoppings sites.
Open-source code on github.com/ShopCompanion
Web Server Check Tool
Requires Restart
A tool to perform basic checks on web and DAV servers.
/r/CFB Easy Flair
Requires Restart
Easily insert flair into /r/CFB posts with a shorthand system.
Mukparasi Korean-English Dictionary File
Requires Restart
A Korean-English dictionary file for Mukparasi.
Synonym-Wörterbuch DE
Requires Restart
Adds to browser German(DE) synonyms dictionary from package LibreOffice.
ksbtechies
Displays latest ksbtehchies News in a popup widget
Get all the Latest ksbtehchies News headline with a single click.
Opens a popup widget with the latest news headlines.
To create your own collections, you must have a Mozilla Add-ons account.