RegexTester

RegexTester is a small tool to validate one or more strings against a regular expression. It uses the NSPredicate regular expression mechanism as described here.
After launching RegexTester youÕll see two input fields.

The first one is for the regular expression you want to use for the validation. The second field is for the string you want to validate.
Entered values can be saved by clicking on the Save-Button. Saved values persist after you closed the application and can be erased by clicking Clear Regular Expressions and Clear Stings to Test respectively in the File-menu.
The validation process takes place every time you change either the regular expression or the string.
The traffic light indicators at the bottom of the application show you the current status of the validation. The left one shows you if the current selected string matches the selected regular expression. The right indicator switches to green if all saved strings are matched by the selected regular expression.