The Computers: Software: Operating Systems: Realtime: (eCos Realtime )

eCos (the Embedded Configurable Operating System) is a free open source real-time operating system (RTOS) designed for use in embedded systems. A key feature of eCos is its source-level configuration system which provides the infrastructure necessary to define configurable operating system features and to specify the dependencies between them. Developers make use of this configurability to customise eCos for specific application requirements, increasing performance and reducing memory requirements. The configurability of eCos at the hardware abstraction level has enabled the porting of eCos to many processor architectures and development boards. eCos is developed as an open source community project under the guidance of a team of independent maintainers. eCos Realtime Operating Systems Software Computers.

The Embedded Configurable Operating System ( eCos ) is a free and open source real-time operating system intended for embedded systems and applications which need only one process with multiple threads. (wikipedia)