Dark Reader is a free extension for Chrome, Firefox, Edge, Safari, and Thunderbird that will make surfing the web easier on the eyes through customizable dark themes.

With the Glasp for Chrome extension, you can easily jot down notes and highlight important information on web pages.

Dark Mode for Chrome, Firefox, Edge, and Opera is an extension/add-on that allows quick and easy switches between light and dark modes.

IE Tab for Chrome is a free extension that effectively emulates the Internet Explorer rendering engine making it possible for you to visit IE required sites without actually launching IE.

Stylus for Chrome, Firefox, and Opera allows you to install themes and skins for many popular sites easily.

Old Reddit Redirect for Chrome and Firefox will ensure you always load the old (old.reddit.com) design instead.

Jiffy Reader is a Chrome extension that allows for faster reading of any webpage.

Color Temperature (Change Lux) for Chrome, Firefox, Edge, and Opera can help protect your eyes by adding a warm color to websites allowing you to avoid excessive light.

hyde for Chrome is a small extension that allows you to hide/show Youtube video player controls.

The Super Simple Highlighter for Chrome extension will allow you to highlight selected blocks of text on a webpage, and restore them on each future visit.

Dark Mode / Night Reader for Chrome is a freeware Chrome extension allowing for inverting page colors, showing white text on a dark background, and more.

Night Viewer is a browser extension available for Chrome and Edge that activates dark mode when you utilize View Page Source.

Dark Night Mode is a Free Open Source Google Chrome extension that makes all the websites you browse into dark/night mode so that you can browse the internet without straining your eyes.

Custom Cursor for Windows and Google Chrome provides you with a large collection of free cursors, or you can upload your own.

Custom Scrollbars for Chrome, Firefox, and Edge allows you to add a personal touch to your browsing session.

Black Hole Theme for Chrome features a striking and immersive black hole background that will appear on all your new tabs.

Super Dark Mode for Chrome and Firefox is a free extension that allows you to apply a dark theme to websites.

Dark Mode for Web Chrome extension enables you to switch to a darker color scheme on the majority of web pages, providing a more comfortable viewing experience, particularly in low-light environments.

Dark View for Chrome and Firefox enables a dark overlay while you browse the internet and allows you to set the darkness level.

In The Dark for Pale Moon gives you the ability to enjoy Pale Moon from a dark theme.

Dualless for Chrome is a nifty little extension that gives you a dual monitor display without spending money on two monitors.

Auto Highlight helps you identify crucial information on the internet; it also provides support for RegExp and offers several styling choices.

Zoom Page WE for Chrome and Firefox gives you more control over zooming in/out of web pages.

Dark Theme for Google (Chrome, Firefox, Edge, and Opera) allows you to add a dark theme for various Google products like search, contacts, images, and translate.

automaticDark is an add-on for Firefox that will switch up the theme based on specific times or via your location.