An operating system based on the best Windows NT design principles
ReactOS is an open source effort to develop a quality operating system that is compatible with applications and drivers written for the Microsoft Windows NT family of operating systems (NT4, 2000, XP, 2003).
Market leading real time kernel for 35+ microcontroller architectures
FreeRTOS is a market leading RTOS kernel from Amazon Web Services that supports more than 35 architectures and was downloaded once every 3 minutes during 2016. With millions of deployments in all imaginable market sectors (from toys to aircraft), the FreeRTOS kernel is trusted because it is professionally developed, strictly quality controlled, robust, supported, free to use in commercial products without a requirement to expose proprietary source code, and has no IP infringement risk. Amazon Web Services provides a highly reliable, scalable, low-cost cloud infrastructure platform that powers hundreds of thousands of businesses in 190 countries around the world. In 2015 AWS added specific Internet of Things (IoT) capabilities, and now offers Amazon FreeRTOS to help users securely connect their MCU devices to the cloud. Learn more at http://aws.amazon.com/freertos. ARM Cortex (Cortex-M0, Cortex-M0+, Cortex-M3, Cortex-M4, Cortex-M7, Cortex-A9, Cortex-A5), Renesas, TI, etc.
Real-time frameworks/RTOS based on active objects & state machines
Real-time frameworks/RTOS for building responsive and modular real-time embedded software as systems of active objects (concurrent state machines). The QP family consists of QP/C, QP/C++, and QP-nano frameworks, which are all strictly quality controlled, superbly documented, and commercially licensable. The behavior of active objects (a.k.a. actors) is specified in QP by means of hierarchical state machines (UML statecharts). The frameworks support manual coding of UML state machines in C or C++ as well as automatic code generation by means of the free QM modeling tool. All QP frameworks can run on bare-metal MCUs, completely replacing a traditional RTOS. Ports and ready-to-use examples are provided for major embedded CPUs, such as ARM Cortex-M, ARM7/9, MSP430, as well as Arduino and mbed. QP/C and QP/C++ can also work with a traditional RTOS/OS, such as ThreadX, FreeRTOS, embOS, and uC/OS-II as well as Linux (POSIX), Windows.
ChibiOS/RT is a free and efficient RTOS designed for deeply embedded applications. It offers a comprehensive set of kernel primitives and supports many architectures: ARM7, Cortex-M0, Cortex-M3, Cortex-M4, PowerPC e200z, STM8, AVR, MSP430, ColdFire, H8S, x86.
FreeDOS is a free DOS-compatible operating system.
FreeDOS is a complete, free, DOS-compatible operating system that you can use to play classic DOS games, run legacy business software, or develop embedded systems. Any program that works on MS-DOS should also run on FreeDOS. It doesn’t cost anything to download and use FreeDOS. You can also share FreeDOS for others to enjoy! And you can view and edit our source code, because all FreeDOS programs are distributed under the GNU General Public License or a similar open source software license.
The AROS Research Operating System is an effort to implement an Open Source and portable operating system that is compatible with AmigaOS(TM). Originally, it was meant as a direct reimplementation, but already has features not existing in AmigaOS.
Run Linux on Windows or other OSes, natively.
Cooperative Linux is the first method for optimally running Linux on Windows and other operating systems natively. It is a port of the Linux kernel and support code that allows it to run cooperatively without emulation along with another operating system.
Archman-OS / Arch Linux based linux distribution
Archman OS Arch Linux based linux distribution Default Arch Linux, Default Desktop Environments No configuration, No Customization
Run Linux on the Playstation 2
Kernelloader is a free bootloader for PS2 Linux and other Playstation 2 operating systems. Loading can be done by "Action Replay Media Player", by "memory card exploit", by "FMCB" or any other homebrew loading method. If you downloaded the latest Linux Live DVD, you need to run the online updater to be able to play Youtube videos.
OS-9/6809 compatible operating system for Tandy CoCo and Dragon
The NitrOS-9 Project provides an OS-9/6809 compatible operating system for the Tandy/TRS-80 Color Computer and Dragon home computer.
Real-Time Embedded Operating System
Nuttx is a real time embedded operating system (RTOS). Its goals are: (1) small footprint usable in deeply embedded, resource constrained environments, (2) fully scalable from tiny (8-bit) to moderate (32-bit), (3) standards compliance, (4) real time, and (5) totally open. Think "Tiny Linux".
LuninuxOS is a Debian/Ubuntu based Linux distribution.
LuninuxOS is a Debian/Ubuntu based Linux distribution designed to be beautiful, clean, simply, fast, and stable. it was previously known as Sn0wl1nuX. It is super-fast, great-looking, secure, intuitive operating system that powers desktops and laptops. LuninuxOS is absolutely free, and comes with a selection of the best applications designed to meet most of your daily needs. It can be run directly from a CD/DVD/USBStick and optionally be installed to a HDD, including IDE, SCSI, SATA, PATA and USB drives.
Free operating system for Atari computers, and more.
EmuTOS is a TOS compatible operating system for Atari ST series computers, and more. It is made from Digital Research's GPLed original sources and is a free and open source alternative to Atari proprietary ROMs.
Drivers for the HP (previously Compaq) Smart Array controllers which provide hardware RAID capability. Hardware info: http://www.hp.com/go/smartarray
exGENT Live DVD is - as the name suggests - based on Gentoo Linux
exGENT version 180414 Linux Live DVD is - as the name suggest - based on Gentoo Linux. The best thing with exGENT is the premier auto detection of hardware and the ability to relatively easily install the system to hard drive during a live session. LXQt 0.11.0 is used as Desktop environment. Used kernel: 4.15.14. INSTALLATION The system can easily be installed to hard drive and/or a USB flash drive. The installation takes 3 - 10 min. (Depending on computer type). ROLLING DISTRIBUTION Gentoo/exGENT is a "rolling" distribution, which means that you can always get the latest software without reinstalling. Upgrade the system every month or so... GO FOR IT! You'll run exGENT super fast in RAM. The launch from the DVD becomes a little slow, but then... A wonderful way to run Linux if you have enough RAM. You'll need at least 3 GB. SPOTIFY Just emerge it! (Pre-installed now). WHO IS exGENT/Gentoo FOR? Experienced Linux users or those who really want to learn Linux.
Providing an easy to use platform for running Ancient UNIX & BSD on windows.
TORO is demonstrating an innovative operating system by integrating at the same ring level both kernel and the user application server. The threads of the user application server are distributed evenly on all CPUs and running independently in parallel. The memory model chosen is NUMA without pagination. During the initialization, the memory is divided proportionally for each processor installed on the system. When a thread needs memory, the memory allocator returns a free block of memory depending on which CPU the thread is running. In the same way, TORO can dedicate resources to specific processor, i.e. a FileSystem. This only CPU then can access to this instance of FileSystem. The scheduler is based on the cooperative threading model, therefore due to this design, TORO can migrate threads between CPUs and send messages between threads without using any lock instruction. TORO is well suited for integrated system to run at high pace application servers like web servers.
QNAP GPL Source
GPL source for QNAP Turbo NAS
NetFlow iptables module for Linux kernel
ipt-netflow is high performance NetFlow exporting module for Linux kernel (up to 4.15). Designed for Linux router in high-throughput network. This is netfilter/iptables module adding support for -j NETFLOW target. Designed to work efficiently w/o conntrack. Supporting NetFlow protocols v5, v9, and IPFIX. Accounting for IPv4, IPv6 traffic, and NAT translation events (NEL). Additional options is SNMP-index translation rules, aggregation rules, Ethernet type, MPLS, VLAN, and MAC addresses exporting.
Tool kit for building highly secure special-purpose operating systems
The Genode OS Framework is a tool kit for building highly secure special-purpose operating systems. It scales from embedded systems with as little as 4 MB of memory to highly dynamic general-purpose workloads. Genode is based on a recursive system structure. Each program runs in a dedicated sandbox and gets granted only those access rights and resources that are needed for its specific purpose. Programs can create and manage sub-sandboxes out of their own resources, thereby forming hierarchies where policies can be applied at each level. The framework provides mechanisms to let programs communicate with each other and trade their resources, but only in strictly-defined manners. Thanks to this rigid regime, the attack surface of security-critical functions can be reduced by orders of magnitude compared to contemporary operating systems.
Open Source SW/HW Project for Embedded Ethernet Applications. Works with AVR ATmega256/128/103, AVR32, SAM7X, SAM7S(E), SAM9, AT91X40, GameBoy Advance, Cortex M3 / M4 (STM32, NXP LPC, LM3S), Freescale Coldfire, RTL8019AS, LAN91C111, CS8900 and DM9000E chips. Offers a tiny TCP/IP stack including HTTP, FTP and DHCP.
Cryptic Allusion Dreamcast-related development: KallistiOS, Ghetto Pong, etc.
Before you download please visit the Lightning Linux Website and the Youtube Playlist http://emmett31.wix.com/lightningdownload https://www.youtube.com/watch?v=4fRBNxNJUL8&list=PLXrG1x9jbtaS4gd0tjGaNesSoZJpsQEZ8 Lightning Linux NOW has Doom and Quake installed Lightning Linux is an operating system designed for both older and newer computers. Lightning Linux runs particularly well on older computers. Lightning Linux improves older computers by enabling you to install the newest versions of software and offering a clean, stylish appearance. Lightning Linux uses the Gnome Classic desktop environment. While Lightning Linux Lite uses the LXDE desktop environment. Lightning Linux allows you to bring new life into your old computer. Try it for free!
xinco [eXtensibe INformation COre] is a powerful Web-Service based Information and Document Management System (DMS) for files, text, URLs and contacts, featuring ACLs, versioning, full text search, an FTP-like client (easy install, J2EE+MySQL/PostgreSQL)
FlashForth is a standalone Forth system for the Microchip PIC 18, 24, 30, 33 and the Atmel Atmega series of microcontrollers. A Forth system with interpreter, compiler, assembler and multitasker is provided.