Be the first to review WHMCS Language Editor.
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.
Build, License & Distribute Your Own Apps using WHMCS
This addon allows your to add html / php to the header / footer in the admin area / admin login page / clients area
Simple and easy way to debug your current page (defined constants, request variables, queries)
Reseller API System
WHMCS addon for expose a RESTful API