WHMCS integration of very popular developer tool available in most popular PHP frameworks PHP Debug Bar (http://phpdebugbar.com/) It adds footer line into your admin page (and yes, admin only for now) that can display information like:
Be the first to review Developers DebugBar.
The best place to start if you need help with a specific product is to contact the developer. All WHMCS Marketplace developers have both a website and support URL listed.
Initial release display information like:
After you download installation package, upload unpacked directory (nemc_debug_bar-master) into your modules/addons directory and rename it to nemc_debug_bar (remove "-master" part) and you are all ready to go.
Build, License & Distribute Your Own Apps using WHMCS
Generate, distribute and validate license keys
This module allows you to alter the language strings used throughout WHMCS.
This addon allows your to add html / php to the header / footer in the admin area / admin login page / clients area
WHMCS addon for expose a RESTful API