DuckDuckGo - The Internet privacy company that empowers you to seamlessly take control of your personal information online, without any tradeoffs.
Mighty Networks - Mighty Networks enables entrepreneurs, organizations, and companies to create and grow a community-powered brand.
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
Bigtent - BigTent is a web-based organization and communication portal for groups.
Searx - Open source metasearch engine
Nabble - Nabble is a forum software that are embeddable and fully customizable with scripting language.