Tampermonkey is a free browser extension and the most popular userscript manager for Blink- and WebKit-based Browsers like Chrome, Opera Next and Safari.
Automatically change the user agent after specified period of time to a randomly selected one, thus hiding your real user agent.
github repo has been archived : https://github.com/tarampampam/random-user-agent
30 Seconds of Knowledge is a web extension that enables you to learn something new every time you open a new tab. Every new tab will display a random code snippet from a list of 5 programing languages or Interview questions and answers (a special category).This app doesn't have any features at the moment.
Change the appearance of websites instantly by applying a easy to use interface for changing the CSS. Preview and install styles created by users for your favorite websites.