QuickPerlTester: Have you ever wanted a quick way to test and debug your PERL or PHP scripts without having to switch between applications? This lightweight, simple program may be the answer. Write your PERL or PHP code in the upper box, click the "Run Perl" button, and your results will appear in the bottom window.
Blinged JSON Validator is a free app to validate JSON files with syntax highlighting, whitespace indentation, error messaging, and hotkeys.