DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.
vym - VYM (View Your Mind) is a tool to generate and manipulate maps which show your thoughts.
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
Freeplane - Freeplane is a powerful and free software for building mind maps.
Searx - Open source metasearch engine
Pencil Project - Single-user mockup / wireframing / diagramming tool