Regular Expression Explorer

Regular expression explorer provides with popular regular expressions. Also we can try out a regular expression on a test input.

WebSite: http://ryanswanson.com/regexp/#start

Regular Expression Validator

Regular Expression Validator is a web-based regular expression validator for Javascript that lets you easily test and write regular expressions for Javascript.

The tool helps you check syntax and also provides a regular expressions library for your use as well.

WebSite: http://tools.netshiftmedia.com/regexlibrary