WHMCS is the perfect tool for Software Developers. We use it ourselves!
Our PHP Licensing Solution lets you sell your software protected by a robust and easy to use system. WHMCS combined with the Licensing Addon allows you to fully automate the selling and license management process, handling everything from customer signup & license issueing, to secure distribution of the files, recurring billing, blocking of access for non payment, and customer support.
» Flexible Licensing
Restrict installations by domain, IP and directory or any combination of the above
» Client Area
Allow customers to view and manage their licenses, reissue, access downloads, cancel, view & pay invoices, and more…
» Integrated Support Tools
Includes a full support ticketing system with email piping, knowledgebase and announcements pages
» Easy Integration
The code you need to integrate into your app to perform a license check is provided ready to simply copy & paste
» Full Automation
WHMCS will automate the billing, payment and licensing issueing process. Also suspends access when overdue
» Developer Friendly
Module support for third party integration, hooks to tie into core functionality, and an API make developing a breeze