Violentmonkey

Violentmonkey provides userscript support for Opera, supporting most scripts for Greasemonkey and Tampermonkey.

Features:
1. Update automatically according to the meta data.
2. Scripts will be executed in order as shown in the list.
3. GM functions are supported.
4. Support import from and export to a zip file.
5. Sync to Dropbox and OneDrive!