Computers

A free real time operating system suitable for embedded platforms. Runs on several microprocessors and microcontrollers, ranging from 8 bits to 32 bits and on personal computers.

RTOS simulator based on event-driven simulation methods with concurrent target debugging abilities, mimics OS behavior, to implement and test embedded software on workstations. Descriptions, downloads, documents. [Savannah, Open Source, GPL]

An open-source operating system for the Internet of Things. It connects tiny low-cost, low-power microcontrollers to the Internet.

Makes 2 very small, open source realtime OSs for embedded systems, written in C: proc Real-Time Kernel, preemptive, mature; nesos Finite State Machine Operating System (FSMOS), modular, use concurrent programming methods in little time and space. Also: nemon Boot and Debug Monitor; Embedded Web Servers.

A microkernel based operating system, aims at binary compatibility with QNX Neutrino.

An operating system for the Internet of Things.

Realtime microkernel: preemptive, fully re-entrant, multithreaded, SMP, continuations, full locking primitives; shares many ideas with Mach, developed by CMU in late 1980's, early 1990's, stopped in 1994. [GPL]

Dynamic configurable kernel architecture to support hard/soft/non realtime use with interchangeable scheduling algorithms: fully modular in scheduling policies, aperiodic servers, concurrency control protocols; all not modular in most traditional OSs. Derived from HARTIK: HArd Real TIme Kernel. [GPL]

Compares 2 open source OSs for embedded uses: RTLinux, eCOS by Cygnus. (October 01, 1999)