Online Tools

WebPagetest

Google PageSpeed

PyRegex Your Python Regular Expression's Best Buddy

Debuggex Online visual regex tester. JavaScript, Python, and PCRE.

Color Scheme Designer

explainshell write down a command-line to see the help text that matches each argument

Check IMEI iPhone check whether an iPhone is locked.

Terminal Color Scheme Designer

ColorPicker

Gists share code.

Pastie share code.

Code Paste .NET share .NET code.