Add extensions, get work done

Scrape the web for exam questions.

Download gpx tracks from the Swiss alpine club route portal.

Allows you to submit solutions for Codeforces problems directly from the problem page without redirect.

A popup window that can be used to write down quick notes and make calculations.

Takes a screenshot of the entire webpage from top to bottom in just one click.

Replace the newtab page with a simple todo list

The Proxy & User-Agent Switcher extension helps to do geolocation-testing and mobile device-testing of any websites.

Apply Dark Clarity Theme to vCenter!

Saves web sites to Centurial as a source.

Adds a google bang in the duckduckgo search as buttons

A Pacman popup for Fire fox

Shows the MAJOR software version (the part on the left of the first dot).

Audio level normalizer for voice.mozilla.org contribution

Unlocks printing of practice quizzes, real quizzes, and exams on Coursera.org

A tool that makes it easy to quickly add words from Jisho.org into your Anki decks

An effective and user-friendly Cookie Editor Pro.

Suspending AudioContext instances automatically

Unblock Discord and other sites on school WiFi!

Quick Append event on google calendar from event text like agenda : xxxx date: 2018/03/04 13:00~14:00 *) You can't try in like this plugin page. I could try twitter(jp) page.