Scriptcat

👥 80K+ users

📦 v1.3.1

💾 4.14MiB

📅 2026-03-22

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Execute user scripts with ease using Scriptcat, a powerful browser extension that allows you to automate tasks and enhance your browsing experience. With its cloud sync feature, script subscription, and background execution capabilities, Scriptcat is ideal for developers and power users who want to streamline their workflow and automate repetitive tasks. By leveraging Scriptcat's rich API and sandbox mechanism, users can create complex scripts with ease, making it a valuable tool for anyone looking to take their browser to the next level.

Overview

ScriptCat, a browser extension that can execute user scripts, everything can be scripted, allowing your browser to do more things!

## About

We built a framework for executing background scripts and Greasemonkey/Tampermonkey scripts based on the design ideas of Greasemonkey/Tampermonkey. It also has several unique APIs that enable scripts to do more. Furthermore, we provide a fantastic online editor that makes script code development more pleasant and easy.

**Please Star it if you find it useful. ❤❤❤**

## Features

- Cloud Sync: script recovery is easy when changing or reinstalling browser
- Scripts subscription: creating your own script collections or enabling multiple scripts to work together.
- Compatibility: allowing seamless migration from other userscript managers.
- Background scripts: allowing your scripts to run continuously in the background.
- Scheduled scripts: allowing for daily scheduled tasks. You can use them for automatic check-ins, timed reminders, and more.
- Rich API: more powerful APIs than other managers, which can realize more functions.
- Sandbox mechanism: ensuring user safety, script permissions are granted only with user consent.
- Excellent editor: providing API auto-completion and ESLint.
- Nice UI

...More features are Coming.

### Discussion

- [Telegram](https://t.me/scriptscat)
- [Discord](https://discord.gg/JF76nHCCM7)
- [油猴中文网](https://bbs.tampermonkey.net.cn/)

## Other

API Document: https://docs.scriptcat.org/en/docs/dev/

Github: https://github.com/scriptscat/scriptcat