Violentmonkey by Gerald, tophf

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.
- Importing from and exporting to ZIP files.
- Cloud synchronization with Dropbox, OneDrive, Google Drive, and any WebDAV server.
- Open source!
- A frequently updated beta version (click the xpi file inside Assets and confirm).