You can download the ReadyNAS OS 6 Application Software Development Kit (ReadyNAS OS 6 App SDK) from this page.

The current SDK version is 104.

• Download SDK Package
• Download Example debs Ver. 104 (189731 bytes)
• View README file in SDK package (This is included in SDK too.)
• Download Zipped Development Environment VirtualBox VDI (839743644 bytes)
• Read How to jump start using VM image
• Read How to setup ReadyNASOS on VM
• Check reserved ports by other apps