.htaccess check - Syntax checker for Apache .htaccess files
Crontab Generator - tool helps you to visually generate crontab job line easily and check syntax online from your browser.
PHP Syntax Checker is an online code and syntax editor helps you to write, run and check your php code online from your browser anywhere, anytime.
An advanced, custom PHP code checker that searches your code for common, hard to find typos and mistakes; includes a syntax check.
1st Online Python Editor With Live Syntax Checking and Execution - GitHub - ethanchewy/PythonBuddy: 1st Online Python Editor With Live Syntax Checking and Execution