FaxPress Software Developers Kit (SDK)

Welcome to the FaxPress developer's page. Castelle offers a free FaxPress Software Developers Kit (SDK) to allow developers to add faxing capabilities to their existing applications and develop custom faxing applications. If you are investing significant corporate resources in integrating Castelle products with a business application, please consider becoming a Castelle Corporate Partner.

FaxPress SDK includes:

• Castelle SimpleFax utilities
• Castelle Programming Interface (CPI)
• C/C++ sample code
• Visual Basic sample code
• Programmer's Guide
• Tech Notes

In order to download the SDK, please register as a FaxPress developer. This will allow us to send you future updates to the SDK and get your feedback about future enhancements to the API and utilities. Click here to read Castelle's Software and Download Terms & Conditions.