DSPnano is an open source tiny tiny POSIX or Linux compatible RTOS suitable for general purpose and DSP applications. It offers a tiny POSIX kernel, a complete set of I/O and integrated DSP libraries. DSPnano is free for development and is seamlessly integrated with MPLAB.

Erika Enterprise and RT-Druid represent the answer of Evidence Srl for the development of scalable real-time applications for the Microchip dsPIC (R) DSC family. RT-Druid will be used to quickly configure the application, setting temporal parameters of real-time tasks, memory requirements, stack allocation and many other parameters. RT-Druid generates the application template, and leaves the developer the task to implement the logic of each single task. While programming the application, the developer can exploit the power and flexibility offered by the primitives of the Erika Enterprise real-time kernel. The application can be imported into MPLAB IDE to be written into the dsPIC (R) DSC EPROM flash memory. Moreover, the application can be debugged from within the MPLAB IDE.

FreeRTOS.org is an open source mini real time kernel. Ports and demo applications are provided for the PIC24 and dsPIC, amongst many other architectures.