一个开源的用户脚本管理器，支持很多浏览器

Violentmonkey provides userscripts support for browsers. It works on browsers with WebExtensions support. It supports most scripts for Greasemonkey and Tampermonkey.
Features:
- Update automatically according to the meta data.
- Scripts will be executed in order as shown in the list.
- GM functions are supported.
- Support import from and export to a zip file.
- Sync to Dropbox, OneDrive, Google Drive and WebDAV!"