MindMeister : MindMeister is an online mind mapping tool that lets you capture, develop and share ideas visually.
Mind42 : Collaborative mind mapping in your browser
Requestdiff : Differentiate HTTP headers and content body of two GET URLs.
repl.it : Powerful and simple online compiler, IDE, interpreter, and REPL. Code, compile, and run code in 30+ programming languages. including JavaScript, Pytho...
mail-tester.com : Free online service that allows you to test your emails for Spam, Malformed Content and Mail Server Configuration problems
