DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.
John's Background Switcher - Switch backgrounds to trending imgur, reddit, tumblr threads
Google - Google Search, also referred to as Google Web Search or simply Google, is a web search engine developed by Google. It is the most used search engine on the World Wide Web
Muzei - Muzei is a live wallpaper that gently refreshes your home screen each day with famous works of art.
Searx - Open source metasearch engine
Variety Wallpaper Changer - Variety is a wallpaper changer for Ubuntu which is featureful, yet slim and very easy to use.