Greasemonkey icon
Greasemonkey icon

Greasemonkey

 397 likes

Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.

Greasemonkey screenshot 1

License model

  • FreeOpen Source

Application type

Country of Origin

  • US flagUnited States

Platforms

  • Mac
  • Windows
  • Linux
  • Mozilla Firefox
4 / 5 Avg rating (6)
397likes
3comments
0news articles

Features

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Properties

  1.  Customizable

Features

  1.  Safari extension
  2.  Windows To Go

 Tags

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Greasemonkey information

  • Developed by

    US flagAnthony Lieuallen, Aaron Boodman, Johan Sundström
  • Licensing

    Open Source and Free product.
  • Written in

  • Rating

    Average rating of 4
  • Alternatives

    12 alternatives listed
  • Supported Languages

    • English

AlternativeTo Category

Web Browsers

GitHub repository

  •  2,438 Stars
  •  334 Forks
  •  63 Open Issues
  •   Updated Feb 23, 2025 
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Our users have written 3 comments and reviews about Greasemonkey, and it has gotten 397 likes

Greasemonkey was added to AlternativeTo by Xure on Oct 20, 2009 and this page was last updated Feb 6, 2025.

Comments and Reviews

   
 Post comment/review
Top Positive Comment
0and1
Oct 15, 2021
0

a bid for control

Top Negative Comment
musichemyst
Nov 6, 2012
1

Greasemonkey has become bloated in recent years and can be quite the resource hog even with only a handful of scripts installed. There's also been some interface changes that have drawn complaints. And to be fair, regardless of whether those changes are good or bad, you have to wonder about the developer's priorities when there's so much attention being paid to the aesthetic of the addon instead of making it a priority to optimize its performance.

Don't get me wrong -- I was a huge fan of Greasemonkey for many years to the extent that I accepted the negative impact it and my userscript collection had on my browser's heavy CPU/RAM usage because it provided functionality that I couldn't live without when it came to using countless websites.

With that said, the arrival of the new userscript engine/manager, Scriptish, has shown it to be doing everything right that Greasemonkey is doing wrong. Specifically, it's considerably more streamlined and slicker and you can tell the difference right off the bat. Ironically, Scriptish is a fork of Greasemonkey (i.e. based directly off of its open source code) and so it just proves that Greasemonkey could be in better shape than it is because in a way Scriptish is Greasemonkey.

Bottom line... if you're going to use userscripts on your browser, go with Scriptish. Greasemonkey is still in the game, but if they don't get their act together, Scriptish will ultimately become the "Greasemonkey Killer". In fact, I was blown a way that the number of likes for Scriptish is still in the single digits here on aTo compared to 150 or so for Greasemonkey considering how users over at the addons.mozilla.org community have been becoming Scriptish converts in droves.

Shoji
Jan 28, 2019

Last updated on Jun 14, 2013 which is discontinued

Shoji
Jan 19, 2018
1

used to be very good userscript manager for firefox but since it was moved into webextensions, it was lacking on features which makes tampermonkey better alternatives

What is Greasemonkey?

Greasemonkey is a Firefox extension that allows you to customize the way webpages look and function.

Hundreds of scripts are already available for free. And if youre the tinkerer sort, you can also write your own.