ScriptCat
A userscript manager extension compatible with Tampermonkey scripts that can also run background scripts.
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About ScriptCat
ScriptCat is a browser extension for installing and running userscripts, the small scripts that change how web pages look and behave. It follows Tampermonkey's design and runs Tampermonkey scripts. It also adds a runtime for background scripts, which keep working when no matching page is open, and extra APIs for script authors.
The project runs its own script site at scriptcat.org, where you can search for and share userscripts and install them with one click. It suits people who already use userscripts and want scripts that do more than change a single page.
Strengths
- Runs existing Tampermonkey scripts
- Background script support beyond page scripts
- Extra APIs for script authors
- Own script site with one-click installs
Limitations
- Background and extended APIs only work in ScriptCat, not other managers
- Much of the script site's content and community is Chinese-language
Details
- Pricing
- FreeFree open-source extension with a free script-sharing site.
- License
- Open source, license not stated
- Developer
- The ScriptCat contributors
- Platforms
- Browser extension
- How it runs
- Browser extension
- Best suited for
- Userscript users who want background scripts alongside Tampermonkey compatibility
- Categories
- Browser tools, Automation
- Last verified
- Added
- Provenance
- Facts checked against the developer's own pages and store listings, 1 sources on file.
Alternatives to ScriptCat
Compare allSoftware that can replace ScriptCat for an important use case, and what changes if you switch.
Tampermonkey
Userscript manager for running custom scripts on websites.
Tampermonkey runs the same scripts across every major browser with backups and an editor, but it is closed source and lacks ScriptCat's background scripts.
Violentmonkey
Open-source userscript manager with cloud backup.
Violentmonkey is open source under MIT with cloud backup through your own storage, but does not offer ScriptCat's background scripts or extended APIs.
Greasemonkey
A Firefox extension that runs user scripts to change how web pages look and behave.
Greasemonkey is a long-established open-source manager for Firefox only, with a built-in editor and automatic updates, but releases are infrequent and background scripts are absent.
Userscripts
An open-source userscript and userstyle manager for Safari on macOS and iOS.
Userscripts is an open-source manager for Safari on macOS and iOS that handles user styles too, and scripts from other managers may need adjustments.
Similar software
Related functionality, not necessarily a direct replacement.
