Topic summary
Userscripts
Extracted from the Wikipedia article Userscript.
On desktop browsers such as Firefox, userscripts are enabled by use of a userscript managerbrowser extension such as Tampermonkey or Greasemonkey. The Presto-based Opera-supported userscripts (referred to as User JavaScript) are placed in a designated directory. Userscripts are often referred to as Greasemonkey scripts, named after the original userscript manager for Firefox.