To use these add-ons, you'll need to download Firefox.

Log in

8,673 extensions found in Games & Entertainment

Filter results
Search results
  • Option Comparison Game

    Option Comparison Game

    Choose between two options in a fun "This or That" comparison game.

    Freeh

    0 users

  • Codeforces Challenge Progress

    Codeforces Challenge Progress

    Track today's Codeforces solved rating points against a local daily goal.

    Hjalte01

    0 users

  • Omegtrics (For SteamDB.info)

    Omegtrics (For SteamDB.info)

    Omegtrics creates estimated statistical information directly to SteamDB.info website chart pages such as DAU, Retention, Region breakdown.

    Falconhoof

    0 users

  • DevShortcuts Mastery

    DevShortcuts Mastery

    Level up your coding speed! A minimalist mini-game to test and memorize essential IDE and DevTools keyboard shortcuts.

    Juliette Prescott

    0 users

  • LingoBridge

    LingoBridge

    LingoBridge is a lightweight and engaging vocabulary trainer that helps users quickly master essential Vietnamese-English words and phrases through interactive popup quizzes. Perfect for daily language practice.

    Eleanor Beaumont

    0 users

  • Word Sparks

    Word Sparks

    Challenge your Vietnamese vocabulary with quick definition quizzes.

    Isabella Montclair

    0 users

  • English Idioms Quiz

    English Idioms Quiz

    Master popular English idioms and expressions. Test your vocabulary and unlock natural, native-like conversation skills.

    Eleanor Ashford

    0 users

  • Monk Mode

    Monk Mode

    Blocks certain websites/pages to avoid procrastination and maximize productivity (current version only blocks Youtube Shorts)

    piroliro

    0 users

  • Brain Flex: Math Flash

    Brain Flex: Math Flash

    A fast-paced browser extension designed to sharpen your mental math skills. Challenge yourself with quick arithmetic questions anytime you open your browser—perfect for students and professionals looking to keep their minds sharp.

    Lucienne Rothwell

    0 users

  • On this Day

    On this Day

    Events that happened on the same day, different year, in history!

    Abhineet Karn

    0 users

  • Auction Skin Trade Helper

    Auction Skin Trade Helper

    https://auction-skin.com

    Auction Skin

    0 users

  • Cosmic Cipher Quiz

    Cosmic Cipher Quiz

    Test your space knowledge! Read the celestial clues in Vietnamese and crack the cosmic cipher in English.

    Josephine Waverly

    0 users

  • Deadlock2Dire

    Deadlock2Dire

    Converts Deadlock patch notes (English only) to more readable Dota-style format.

    AiSatan

    0 users

  • Path of Paper Roll 20 Random Item Generator

    Path of Paper Roll 20 Random Item Generator

    Adds a button and multiple drop down menus in the left upper tool bar for random item rolls according to the path of paper rule book.

    Raven Revana

    0 users

  • Fahhh

    Fahhh

    Plays the high-pitched "Fahhhh" meme gasp whenever you encounter a 404 Not Found or a network connection error.

    Eragon

    0 users

  • Speedrun Retimer

    Speedrun Retimer

    To make retiming easier for speedrunners.

    kottu speedrun

    0 users

  • Anime Quick Search

    Anime Quick Search

    Select any anime name on a webpage, right-click and instantly search it. Get quick info + find where to download for free.

    Farah Saeed

    0 users

  • Awareness hunt

    Awareness hunt

    Helps people not to binge-watch YouTube.

    Luke

    0 users

  • AniTube → MyAnimeList Sync

    AniTube → MyAnimeList Sync

    Automatically tracks watched anime on anitube.in.ua and syncs your progress to MyAnimeList.

    Sn1zhok

    0 users

  • Curiosity Catalyst

    Curiosity Catalyst

    Spark your daily curiosity with fascinating random facts from science, history, nature, and technology.

    Eleanor Ashford

    0 users

  • Minute Cryptic Enhanced

    Minute Cryptic Enhanced

    Adds solve time and streak info to Minute Cryptic share text.

    Hashable

    0 users

  • Number Ninja

    Number Ninja

    Train your brain with fast mental math challenges. Answer multiple-choice arithmetic questions and improve your calculation speed in this fun popup game.

    Rosalie Fairchild

    0 users

  • TTR Wiki Redirctor

    TTR Wiki Redirctor

    Attempts to redirect old Toontown Rewritten fandom pages to the new wiki, and replaces links from google with new wiki links.

    Raku

    0 users

  • Kinopoisk to SS Redirect

    Kinopoisk to SS Redirect

    Replaces 'kino' with 'ss' in kinopoisk.ru URLs.

    Maksik

    0 users

  • sfavs_watch_party

    sfavs_watch_party

    (WIP) A simple video syncing extension. Watch videos with your friends. THIS IS A WORK IN PROGRESS / SIDE PROJECT

    sky86

    0 users