Greasemonkey

Free
Proprietary
Firefox
Online

Greasemonkey Alternatives

10
Options
Considered
2022-04-13
Last
Updated

#1 Tampermonkey

Free
Proprietary
Firefox
Chrome
Opera
Android
iPhone
Tablet
iPad
Online

Tampermonkey is a browser extension available for Chrome, Opera Next, Safari, and Firefox. It’s the most popular userscript manager with over 10 million users. You are mostly used to enhancing web pages with small (and not so small) addons. It adds a powerful yet easy-to-use script editor to your browser that works exactly like a regular text editor.

Open the Tampermonkey Dashboard to see the list of installed scripts. Click on an item (or drag the icon from the Dashboard to the Bookmarks bar for quick access) to open the editor. Edit and save scripts from the editor without leaving the page you are on. Use different profiles for different websites and share your scripts through social networks like Twitter and Facebook or by simply sending the link. Tampermonkey is an open source userscript manager which allows you to manage your script-enabled browser from a central location.

#2 Violentmonkey

Free
Open Source
Chrome
Online
Chromium
Firefox
Edge
Opera
Github

Violentmonkey is a free tool that allows you to run scripts in your web browser. The tool has been shipped with Chrome for years and is also available for Opera, Maxthon, and Firefox. It makes it easy to install, update and manage user scripts. You can easily browse, find, and install user scripts from their repositories like Greasyfork, userscripts.org, or GitHub or search for user scripts by name.

Violentmonkey adds support for Greasemonkey-style user scripts and user scripts to these browsers. The download page on Chrome Web Store has downloads for all four browsers. It is for people who want to make Instant messenger clients safer or their web browsers better. It’s also for people who want to fix their favorite sites when the owners don’t care enough to upgrade them.

#3 Userscripts

Free
Open Source
Mac
Github
Online

Userscripts is an open-source, free, and user-friendly user script manager for the Chrome and Maxthon browsers. It is available for other Chromium-based browsers (Opera Next, Rockmelt Browser, etc.) as well. Violentmonkey allows users to install and update user scripts from Userscripts.org, manage their scripts, and create new scripts. In addition, it features one-click automatic updates of installed scripts, a built-in updater that checks for new script versions once per day if you select the option in settings, an integrated browser extension development environment to aid in creating your own user scripts, the ability to run a user script when any webpage is loaded and many others.

It allows web users to run scripts and extensions created by third parties (user scripts). It takes advantage of the fact that Chrome is open source and makes use of some of’s additions to Chromium, such as (partial) sandboxing and the Task Manager API, to improve the security of user scripts. Chromium itself already provides significant security measures, such as Content Security Policy, HTTPS enforcement, and script isolation.

#4 Site Connector

Free
Proprietary
Chrome
Online

Site Connector is a platform that gives you a way to quickly find new ways to take your existing data and reuse it on another website. For example, imagine you have a job board, and you want to help your users find jobs on multiple websites. It helps you find any external jobs site, like Indeed or Monster, that has publicly available job data and lets you connect it to your site. If you’re a job site publisher, it also helps you find other job sites to partner with. It automatically searches for and creates connections between entities in your data.

Just change your data once and, watch it spread across all connected websites, view connections at a glance with the Data Browser. It connects any public API-powered website, such as Monster, Indeed, and many others. The Site Connector provides you with a quick and easy way to connect your existing e-commerce site to Magento, allowing you to leverage your site assets in Magento for the benefit of your customers. It can be used to import your products from Amazon, eBay, Etsy, and WooCommerce onto Magento.

#5 Man in the Middle

Free
Proprietary
Firefox
Chrome
Github
Online

Man in the Middle is a browser extension that allows users to search for products on their favorite online shopping apps and automatically get redirected to Amazon with a discount. This is because when a user visits a Facebook-integrated website, the only information shared back to Facebook is that you visited that website; no personal information is sent.

And since many sites such as The New York Times, washingtonpost.com, and nytimes.com integrate Facebook features, it could lead someone to erroneously conclude that visiting those sites led to a user seeing an ad from brands. This is simply not true. Users can visit any site they want on the web without being subject to advertising based on their usage of that site.

#6 FreeStylerWs

Free
Proprietary
Linux
Mac
Windows
Online

FreeStylerWs is a free Windows-style manager that gives you the ability to customize the look and feel of websites you visit. Though it has the same functionality as Stylish for Firefox, it is much more powerful since it works not only on web pages but also on Facebook, Twitter, Reddit, and Plus. You can use it to bring your favorite styles everywhere, clean up inappropriate content and even customize that annoying website you couldn’t do before.

FreeStylerWs gives you the ability to modify the look and feel of a page you’re visiting. This can be done in many ways: change headers, backgrounds, menus, fonts, and so on. Even if a page is very customized by its owner (for example, YouTube or Facebook), it can probably help you to achieve the desired effect you want.

#7 FireMonkey

Free
Proprietary
Firefox
Online

FireMonkey is a cross-platform native SDK (software development kit) with visual components and controls that enable developers to create mobile apps for iOS, Android, and Windows UWP (Universal Windows Platform). It includes a full framework for C++ developers to create mobile apps for all of the above. Yet, it uses the same UI building blocks and native controls across all platforms. FireMonkey has special additional features to make your application shine in specific environments like macOS, iOS, or Android.

The framework is a component-based platform that provides a set of UI controls, effects, and a rendering engine across multiple platforms, easing cross-platform mobile application development. FireMonkey includes two main technologies: The API defines OO interfaces that help developers build high-performance, quality apps. Within the API, there are controls and components specific to the mobile platform. Each control implements a set of properties, methods, and events that developers can implement in their own app. The second component is the deployment technology that allows developers to build an application once and deploy it on multiple platforms.

#8 Scriptify

Free
Open Source
Chrome
Online
Github

Scriptify is a jQuery plugin that allows users to add JavaScript codes to any web page without leaving their browser. Users can create and use snippets of JavaScript code via bookmarklets that can be used over and over again. It persuades you to avoid repeating themselves by reusing the same scripts instead of typing the same codes every time they want to add something to their web pages.

It is a simple JavaScript editor for web designers and developers to write JavaScript codes, convert HTML5 to JavaScript, or simply use as a bookmarklet. It makes it easier for designers and developers who want to write JavaScript codes for their own personal usage by providing an easy-to-use WYSIWYG JavaScript Editor on any web page. You can also use Scriptify as a bookmarklet to quickly convert any page from “HTML5” to “JavaScript.”

#9 GreaseKit

Free
Proprietary
Mac
Online

GreaseKit is a platform that gives you access to a powerful yet easy-to-use scripting language that lets you perform actions in WebKit-based applications. It is an open source project, and its development is driven by the needs of its users and the community of developers around it. It lets the easiest way to create custom extensions for WebKit-based applications, making the Internet a better place for everyone. It’s currently used to extend Mailplane for the SIMBL plugin that adds user scripting to Safari, Mailplane, and Diet Pibb. The app and all WebKit applications.

The framework makes it easy to use JavaScript in Safari and doesn’t require you to recompile the application or replace any system files. It adds more control to Safari and allows creating plugins much easier. User scripts provide the simplest way for normal users to add new features and extensions to their favorite applications. Scripts run completely within the application, so they can do anything the WebKit engine allows. GreaseKit includes a lightweight HTTP client, FastXMLParser, and other useful classes.

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#10 Stylus – User Styles Manager

Free
Open Source
Firefox
Chrome
Opera
Online
Github

Stylus – User Styles Manager is a simple, free tool that allows you to easily install themes and skins for many popular sites. It works with websites like Facebook and Twitter but also with shopping sites like Amazon and eBay. When you visit a site with Stylus installed, you’ll see an icon in the address bar. Click it and choose from a variety of available styles. Installing the Stylus Styles Manager will also install a new theme for Chrome, which should be automatically activated the next time you start your browser.

Stylus – User Styles Manager is a powerful User Styles manager for Chrome. User Styles are CSS files that can change the look of websites. They may completely change the look and feel of a site or just add a few enhancements. The styling is completely customizable; you can even add your own CSS, and it’s much more powerful than bookmarklets. It is the first and most popular user styles manager for Chrome. It is easy to use and works on all major sites. You can install skins for YouTube, Facebook, Gmail, Twitter, and many others in no time.