Tampermonkey

Tampermonkey
Original author(s)Jan Biniok
Developer(s)Jan Biniok
Initial releaseMay 2010
Repository
LicenseProprietary (donationware)
Websitewww.tampermonkey.net

Tampermonkey is a closed-source donationware userscript manager that is available as a browser extension. This software enables the user to add and use userscripts, which are JavaScript programs that can be used to modify web pages.