Description from extension meta
Customize your Web is a kind of lightweight UserScript Manager, which addionally provides an API for shortcuts and listviews.
Image from store
Description from store
Customize your Web lets you customize any website through the declaration of small JavaScript Code-Snippets. It differes from other UserScript-Managers that it offers an API for common customizations and addiontionally injects jQuery for more advanced customizations. The main purpose of the API is to provide an easy manner to define keyboard shortcuts and listviews for keyboard navigation, to make the web more accessiable.