Userscripts topic
A userscript is a kind of lightweight and less privileged browser extension written in JavaScript used to modify webpages. Userscripts may use the special API, usually referred as GM_API, allowing them to bypass same-origin policy and store data in separate storage not accessible to web pages. The technology was initially introduced in the GreaseMonkey extension for Firefox web browser, and then spread to other browsers, sometimes built-in, like in Presto-based Opera, sometimes with help of extensions, like in Chromium-based browsers. The most famous catalogs of userscripts are GreasyFork and OpenUserJS.
wanikani-userscripts
Userscripts for the WaniKani.com website
microShield
An userscript blocks Ad-Shield advertisement and anti-adblock
duohacker
An Auto-Answer script for Duolingo that allows you to grind XP and Lingots.
Userscripts
Various userscripts, and libraries for my scripts
duolingo-scripts
User scripts for duolingo.com
tidy-url
A node package & userscript that removes tracking or garbage parameters from URLs making them shorter, cleaner and a lot nicer to read.
p0weruser
A powerful UserScript to add additional functionality.
Dsync-client
The most advanced hack for sploop.io
MTDeck
TweetDeckをスマホアプリのように使えるようにするUserScript