Userscripts
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.
- GitHub: https://github.com/topics/userscript
- Wikipedia: https://en.wikipedia.org/wiki/Userscript
- Repo: https://github.com/greasemonkey/greasemonkey
- Created by: Aaron Boodman
- Released: March 28, 2005
- Related Topics: webextension, javascript,
- Aliases: userjs, greasemonkey, tampermonkey, violentmonkey,
- Last updated: 2026-06-23 00:32:59 UTC
- JSON Representation
https://github.com/gshahr/codeforces-analyzer
This project is a tool for visualizing Codeforces problem-solving data.
analytics codeforces userscript
Last synced: 09 Mar 2026
https://github.com/simonpai/hammermonkey
A browser debugging tool based on TestCafe hammerhead
browser debugging-tool hammerhead userscript
Last synced: 16 May 2026
https://github.com/hakorr/harmonia
Userscript which makes Spotify's desktop layout more user-friendly on mobile.
ad-free browser-extension bypass desktop javascript mobile music spotify ui-design userscript violentmonkey
Last synced: 24 Apr 2026
https://github.com/userscripters/userscripts
Central repository for Stack Overflow userscripts
stackoverflow userscript userscripts
Last synced: 27 May 2026
https://github.com/mohamedelashri/old_wikipedia_layout
A userscript that restores old wikipedia layout
layout userscript userscripts wikipedia
Last synced: 10 May 2026
https://github.com/biuuu/bilibili-live-tts
通过Hook WebSocket实现B站直播数据过滤和语音播报（弹幕、礼物、SC、上舰、入场等），支持队列、模板、去重、合并、黑白名单、语速音量、外部TTS API、整点报时。
ai-generated bilibili-live-tools tts userscript
Last synced: 28 Mar 2025
https://github.com/patricklearn/discord-translate
A Tampermonkey userscript that adds translation capabilities to Discord's browser interface.
discord openai-api translation userscript
Last synced: 12 Apr 2026
https://github.com/marioortizmanero/reddit-unit-converter
A userscript to automatically convert lbs to kgs and vice versa, specifically made for Reddit
conversor convert converter greasemonkey greasyfork javsacript kg kilograms lbs pounds reddit script tampermonkey unit userscript
Last synced: 18 May 2026
https://github.com/jmegner/greasemonkey_google_flights_get_unavailable_prices
Sometimes google flights results say "Price unavailable". This greasemonkey gets those flight prices.
greasemonkey greasemonkey-userscript userscript
Last synced: 16 May 2026
https://github.com/necraul/hide-isekai-general
Hide the isekai general on /a/ recognizable by it's OP post containing the word isekai in spoiler
4chan 4chanx javascript userscript
Last synced: 16 May 2026
