Owl Owl is a light-weight Firefox add-on that gives webpages a dark background and dimmed colors. Free Open Source Web Firefox Dark theme Firefox extension Night mode Add a feature 3 Like
Dark Reader Reduce eye strain in Chrome with this extension that provides a dark theme for browsing. Free Open Source Mac Windows Linux Chrome Firefox Google Chrome extension Dark theme Firefox extension Add a feature 5 Like
Dark mode / night reader Inverts page colors, showing white text on a dark background, to reduce eye strain. Works especially well for people working during the night or in low light... Free Windows Chrome Google Chrome extension Dark theme Add a feature 1 Like
Darkness: Beautiful Dark Themes Chrome extension that provides beautiful dark themes for Facebook, Google and more. Freemium Mac OS X Windows Linux Chrome Chrome Web Store Google Chrome extension Add a feature 1 Like