Firefox add-on with keyword - problem

Problem dude?

Get all problems for Codeforces problems for a certain contest on every page.

Helps you fix annoying sound problems on sites like YouTube: audio in one channel only, too quiet or too loud. (Unfortunately, this extension does not work on all websites because of cross-domain issues — but it does work on YouTube!)

Replaces the word 'problem' with word 'pickle' every where in the text on web page for each web site.

Jamaica , black, green, gold

Filter problem list on cses.fi based on topics, and personal status

Read ePub files right in Firefox. No additional software needed!

Tired of getting that "Video paused. Continue watching?" confirmation dialog? This extension autoclicks it, so you can listen to your favorite music uninterrupted. Working on YouTube and YouTube Music!

Online harassment is a problem. The solution? People being less terrible. Until then, this extension replaces "bitch" and other derogatory words like it with "boss" all across the internet.

Easily copy the current LeetCode problem description to your clipboard.

Stylish audio equalizer in toolbar popup.

Pull up a Roblox user's profile by entering their username or ID.

Multiple changes to the roblox site for a better user experience.

Get rating for Codeforces problems even with problem tags off.

Unmatched adblock extension against advertising and pop-ups. Blocks ads on Facebook, Youtube and all other websites.

The Mass Downloader for your browser

Fetch and display Developer Tips, News and Blogs from DevProblems

Swiftly access your search engines in a popup panel when you select text in a webpage. Context menu also included!

Rewrites BBC news content to include Theresa May and Brexit puns. It's too depressing to read otherwise.

With this extension you can check text with the free style and grammar checker LanguageTool. It finds many errors that a simple spell checker cannot detect, like mixing up there/their, a/an, or repeating a word.

Get a random Codeforces problem of a specific rating.

MS Paint Adventures MSPA Problem Sleuth Pickle Inspector Ace Dick pose as a team what pumpkin Homestuck mspaintadventures.com

Parses competitive programming problems and sends them to various tools like CP Editor and CPH.

Get international weather updates (via AccuWeather.com) displayed right in Firefox with this highly customizable extension.

Not finished yet, but published for previewers purposes and suggestions. Its built around the design of the website itself so it really feels like a ROBLOX persona. Your bookmarks will be the main interface like ROBLOX is. Most Visited is your My ROBLOX on Firefox of course, so the relation between them fits perfectly. ;)