Version: 0.8.20100408.6 || Release Date: 2010-04-08 || License: Other Open Source Developer: Aaron Boodman | App Owner: flov

Allows you to customize the way a webpage displays using small bits of JavaScript.

Hundreds of scripts, for a wide variety of popular sites, are already available at

You can write your own scripts, too. Mark Pilgrim's definitive Greasemonkey guide, will show you how.

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3 Opinions

Many greasemonkey scripts can also run in Safari with the help of Creammonkey


Yes, Greasemonkey is fantastic. And I think it rightfully belongs here - as do the other state of the art FF extensions.

Greasemonkey runs on my Mac and it's on of the reasons I greatly prefer Firefox over Safari. As I understand it, this site's about cataloging and discovering great software that runs on OS X. Where do you draw the line? What about all those Java apps, or Linux X11 stuff like Open Office? Following your logic, those have also very little to do with Macs specifically.

Greasemonkey is great, but I think there needs to be a little more discretion when adding to iusethis. The site FAQ states that " is a new way for you to organize your applications." Granted, there are some valid exceptions for additions like SIMBL plugins or preference panes, but Greasemonkey has very little to do with Macs specifically.