Tampermonkey
Tampermonkey is the world's most popular userscript manager.
What is Tampermonkey?
Stats
Chrome-Stats Rank
Summary
Tampermonkey is the most popular userscript manager, with over 10 million weekly users. It's available for Chrome, Microsoft Edge, Safari, Opera Next and Firefox.
Tampermonkey makes it very easy to manage your userscripts and provides features like a clear overview over the running scripts, a built-in editor, ZIP-based import and export (Google Drive, Dropbox, OneDrive), automatic update checks and also browser and cloud storage based synchronization. And finally it's compatible to Greasemonkey up to version 3.x with experimental 4.x support.
Note: If you want to install the more often updated BETA version, then you can get it from here: https://tampermonkey.net/?browser=firefox
User reviews
User reviews summary
Pros
- Adds functionality to Firefox
- Allows for custom scripts
- Easy to use interface
Cons
- Potential privacy concerns with Google Analytics
- Some users are scared to install it
Most mentioned
- Custom scripts
- Google Analytics
- Installation concerns
Recent reviews
Safety
Risk impact
Tampermonkey is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Tampermonkey if you trust the publisher.
Risk likelihood
Tampermonkey has earned a fairly good reputation and likely can be trusted.