Chameleon

Lightweight Userscript Manager. Provides userscript support for Chromium browsers
Chameleon is a lightweight userscript manager. A fork of the popular Violentmonkey extension with enhanced functionality and updated design.
Chameleon is used to run so-called userscripts. Using them, you can, for example, create a dark theme for your favorite site.
Features:
Ability to make backups by saving your entire gallery in a zip archive
Installing userjs scripts via link
Large userjs script gallery available with search functionality
Convenient one-click script switching
Support for all GM_* functions