TLDR pages - The TLDR pages are a community effort to simplify the beloved man pages with practical examples.
Facebook for Business - Facebook Business gives the latest news, advertising tips, best practices and case studies to meet the business goals.
CheatKeys - View Windows keyboard shortcuts in the current application.
Fomo - Fomo turns your site into the online equivalent of a busy store
explainshell - Match command-line arguments to their help.
Buzzstream - Build Relationships. Build Buzz. Web-based software that helps the world’s best marketers promote their products, services and content.