Simple AVR OS
An Embedded System simple Operating System Framework that allows rapid development of applications build for AVR family but can be ported to other architectures easily enough. System is Round-Robin Co-operative multitasking. Supports: UART, SysTick Timer, ADC, SPI, EEPROM, PWM. Also supports: Xilinx FPGA configuration, FPGA SSI interface, smart card reader etc. Tested partially (different modules in each case) on ATMega163/16/32/323/8. Additionally tools for converting FPGA bitstreams to C table are provided.
The OpenSolaris source base (OpenSolaris-ONNV) maintained version
SchilliX-ON is an attempt to continue the OpenSolaris-ONNV development as OSS project
This is an Mini Operating System for intel protected mode. This OS is written to understand OS concepts such as paging, VM, multitasking, Interrupt handling. This project is mainly done for educational purpose.
The BlueEye OS Project is attempting to create a new-age, streamlined, efficient, stable and user-friendly operating system based on the Linux core that runs software from currently existing OS's as well as its own native format.
C10 strives to be compatible, innovative, complete and useful,whilst also aiming for modularity and cleanliness.The goal is to provide an integrated system (similar to the BSDs), with binary compatibility with other ABIs/OSes.
New Linux Based OS primarily for smart devices and PDA's, laptops, and eventually desktops. It offers an alternative to the "embedded" approach. All OS versions and applications will be hosted and then made available to the subscribers of cloud svs
OpenMAC is a TinyOS-based implementation of IEEE 802.15.4 MAC layer, which lies at the core of MeshNetics ZigBee stack, and provides basic wireless networking (star,peer to peer) to WSN's. Available for low-power ZigBit modules and Atmel AVR Z-Link Kits
The first OpenSolaris based distro (since June 2005)
Schillix is a complete OpenSource operating system based on the source code of OpenSolaris.
UCOS is a micro kernel OS which is orinially intended for teaching. Yet the free UCOS kernel has it's limitations such as limited task quantity, priority reversion. There are tremendous work to be done!