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WITTENTSTEIN High Integrity Systems

WITTENSTEIN high integrity systems is a safety systems company that produces and supplies real time operating systems and platform solutions to the Medical, Aerospace, Transportation, Defence and Industrial sectors, increasing application development efficiency whilst reducing risk through third party certification.

  • OPENRTOS the commercial licence for the embedded real-time operating system FreeRTOS
  • CONNECT MIDDLEWARE a feature rich ecosystem including TCP/IP, USB and file systems.
  • SAFEXCHANGE a protocol layer that ensures the integrity of safety critical data shared between processors. We also provide Board Support Packages, RTOS training, professional support and consultancy
Bristol, United Kingdom
Contact: www.freertos.org/contact



OPENRTOS provides the only available commercial license for FreeRTOS, the highly successful, small, efficient embedded real time operating system. Our unique approach provides the ultimate flexibility for professional software development.

Developed for release under a modified GPL license, FreeRTOS is completely free to download. Updates and ports are simultaneously released by WITTENSTEIN as OPENRTOS, with full commercial support and licensing.

Benefits of OpenRTOS Licensing:

Commercial licensing releases users from the obligation to publish their use of FreeRTOS and provides standard commercial protections and support.

  • Removes the FreeRTOS modified GPL conditions;
  • Commercial indemnification including explicit exclusion of open source code;
  • Confidentiality;
  • Professional support
 Microchip Part #PIC32 FamilyLicense TypePrice


 SW500280MX FamilySingle$3,500.00
 SW500281MX FamilyPlatform$6,000.00


 SW500282MZ FamilySingle$3,500.00
 SW500283MZ FamilyPlatform$6,000.00