Key features
- userscript support compatible with Greasemonkey and Tampermonkey scripts
- automatic updates driven by each script's metadata
- GM function compatibility for standard userscript APIs
- sync to Dropbox, OneDrive, Google Drive, or WebDAV
- import from and export to a zip file
- ordered script execution as listed in the manager
What Violentmonkey does
Violentmonkey is an open-source userscript manager that lets your browser run custom scripts on websites, the same kind used with Greasemonkey and Tampermonkey. It handles automatic updates based on each script's declared metadata, executes scripts in the order shown in its list, and supports the standard GM functions many userscripts rely on.
Syncing and managing scripts
Beyond running scripts, Violentmonkey can sync your installed scripts to Dropbox, OneDrive, Google Drive, or WebDAV, keeping them consistent across devices. You can also import a collection of scripts from a zip file or export your current set, which makes moving between browsers or machines straightforward.
Is Violentmonkey safe?
Violentmonkey itself is open-source, so its code can be reviewed, but the userscripts you choose to install run with broad access to the pages they target. The safety of your setup depends on where you get scripts from; installing only from sources you trust is the main thing to be careful about.