OPENRTOS® is a small, efficient embedded kernel based on the highly successful FreeRTOS. WITTENSTEIN's unique approach provides the ultimate flexibility for professional software development.

Developed by FreeRTOS.org and released under a modified GPL license, FreeRTOS is completely free to download and use, even in commercial applications. It is simultaneously released by WITTENSTEIN as OPENRTOS®, with full commercial support and licensing. There is no 3rd party or open-source content or licensing and the features and quality are tightly controlled and superior to many ‘commercial only’ alternatives. The software is integrated with USB, FAT and TCP/IP providing a complete embedded platform at low cost.

• Supplied as source code
• No open-source content or licensing
• Small footprint, <10kB ROM, 200 bytes RAM (typical) on Cortex-M3
• Supports 24 embedded architectures
• High quality source code downloaded more than 7000 times per month
• Free kernel-aware debugger
• Support for advanced features including MPU (Memory Protection Unit)
• Integrated middleware components available including: FAT file system, USB, and TCP/IP stacks