LiuChan
A modern lightweight mouse-over popup dictionary for Chinese! Displays definitions, pinyin and/or zhuyin, customizable tone colors, as well as Cantonese pronunciation (Jyutping). Source: https://github.com/gkovacs/LiuChanFirefox/tree/firefox
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Sci Hub Injector
Adds SciHub links to popular publishing websites to make free access to science even easier.
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Pacman
All favorite game Pacman does not lose its relevance. You can play it right in your browser, even offline.
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Text Spacing Editor
A tool for editing text spacing properties on web pages. WCAG conformance information included.
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Hide Images (Opacity)
Hide all the images on the page (using opacity), with a Hot Key Alt+0 (Zero) ! Optionally, you can configure to display the images on mouse over.
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Add to Dropmark
A quick way to add links, images, and screenshots to your Dropmark collections.
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Tab manager
Allows basic operations on open tabs, such as copying the URLs to the clipboard, saving the tab list to a file, and reloading saved tabs from a pasted list or from a text file.
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Simple JavaScript Injector
This addon creates a small popup that lets you paste some JS code and inject it into the page you are currently seeing.
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Get Styles
Смена тем и оформлений ВКонтакте. После установки в меню вконтакте появится кнопка «Галерея тем» и там можно выбрать и применить любую понравившуюся тему.
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AdSkip YouTube (Prefer uBlock Origin)
AdSkip Tube allows you to remove the Adblock message on YouTube “Ad blockers are not allowed on YouTube”. Don't forget to turn off your ad blocker, not completely, but only on YouTube.
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Chess.com Custom Themes, Boards - ChessHelper
2025 Setup new themes, pieces, fonts, and boards, remove annoying notifications, popups, and many more.
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Firescape Navigator
Show the Netscape Navigator or Internet Explorer loading animation in Firefox
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