Violentmonkey – Get this Extension for 🦊 Firefox (en-US)
Discover the New World: TamperMonkey (violence monkey) - Programmer Sought
GitHub - Tampermonkey/tampermonkey: Tampermonkey is the most popular userscript manager, with over 10 million users. It's available for Chrome, Microsoft Edge, Safari, Opera Next, and Firefox.
Tampermonkey – Get this Extension for 🦊 Firefox (en-US)
Firefox Add-ons Warning: This extension isn't monitored by Mozilla - gHacks Tech News