Violentmonkey

Violentmonkey is a userscript manager to support running userscripts in web pages.

30 Seconds of Knowledge

Become a better developer, in every new tab.

Conduct Exam is a robust online exam software which offers impeccable assessment solutions

Makes every page (or only pages that you want) to have light text on dark background.

Reduce eye strain in your browser with this extension that provides a dark theme for browsing.

An open source repository of design principles and methods

Styles and skins for all popular sites in the web

GreaseKit is a SIMBL plugin, that adds user scripting to Safari, Mailplane, Diet Pibb.

Customize the way a web page displays or behaves, by using small bits of JavaScript.

Modify requests, inject JavaScript and CSS into pages.

Owl is a light-weight Firefox add-on that gives webpages a dark background and dimmed colors.

Your Bookmarklets, On Steroids

Short-range anonymous messaging (Secret meets Firechat)

Build beautiful React styled components visually í ½í²í ¼í¼

Stylus is a userstyles editor and manager based on the source code of Stylish version 1.5.2.

Greasemonkey compatible script manager.

Enlarge photos, images and thumbnails in VK.

YubNub is a networking web service with a command line–style interface.

A user styles manager for the Web