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A basic operating system that can realize some basic functions. It is developing for educational purposes. It is being developed simultaneously with sslib, the Simple Standard Library for developers program no-OS apps, program NuOS commands or program an operating system.
IdyllaOS is simple operating system. System is based on monolithic kernel with drivers of devices loaded as kernel modules. As required for a modern operating system, it supports features like virtual memory, memory protection and multitasking.
Ace is a micro kernel for developers and researchers. The main goal is to create a very light and compact kernel from scratch with modern OS research concepts.
Its a tiny open source Operating System created mainly aid in study of Operating Systems. It's floppy based, uses FAT-12 filesystem with complete shell and basic commands. It created in C and assembly (gcc + nasm).
Embeddable JVM is a JVM for embedded systems with no OS. Class files can be executed directly from SD card. Small memory consumption (512k is enough). Only FAT16 filesystem is supported for now. Tested on LPC2478 and LPC2939 boards.
Embeddedable Forth compiler is a Forth system for 32 bit devices with no OS. I am currently using it with ADUC7026 board. Also tested on STM32. Win32 version is is used for testing.
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The EVMS Project uses a layered, plug-in model to provide unparalleled flexibility and extensibility in managing storage. This allows for easy expansion or customization of various levels of volume management.
This is an Open Source Operating System which is completely developing in C. It will not be supporting GUI. It is designed to be like a DOS challenging the statement that only GUI enabled OS are more user-friendly and have wider functionality.
It is a minimal linux like kernel for x86 architecture. It is mostly the source code from the tutorial "Roll your own toy UNIX-clone OS" written by James Molloy: http://www.jamesmolloy.co.uk/tutorial_html/index.html It is encoded in a bash script.
A portable BASIC in the style of Microsoft 6502 BASIC (especially the Apple ][+ variant), with influence from GW-BASIC and Atari BASIC among others, with enhanced features, written in C for portability to computers large and small.
KauNet is an emulation platform that can be used for evaluation of protocols and distributed applications with a high degree of control and reproducability. KauNet uses pattern files to control bit-error insertion, packet loss, bandwidth and delay.
Perix is a MS-DOS compatible program, capable of running without an underlining OS. It is written in Turbo Pascal and Assembly. All parts of system are distributed under terms of the GNU General Public License v2.
Prex is a portable real-time operating system for embedded systems. The small, reliable and low power kernel is written in C language based on micro kernel design. File system, UNIX process and networking features are provided by user mode tasks.
high-performance pure-asynchronous modular client/server engine implementation based on linux kernel AIO stuff (linux/fs/aio.c) with support proxy and openSSL's SSL/TLS realization
Aurora OS is an operating system designed in a microkernel format for all users. The object is to develop a modular, mulitplatform, multitasking Operating System that is simple, effective, and powerful.