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ReactOS

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  Analyzed 2 months ago

The ReactOS project is a ground-up implementation of a Microsoft Windows XP/2003 compatible operating system. ReactOS aims to achieve complete binary compatibility with both applications and device drivers meant for NT and XP operating systems, by using a similar architecture and providing a complete and equivalent public interface.

12.5M lines of code

89 current contributors

2 months since last commit

53 users on Open Hub

Activity Not Available
4.61538
   
4 Reviews
I Use This
Mostly written in C
Licenses: GPL2
Tags desktop_environment i386 intel kernel microsoft operating-system operating_system operatingsystem operating_system_kernels operating-systems operating_systems operatingsystems 8 more...

eyeOS

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  Analyzed over 2 years ago

eyeOS is an Open Source Platform designed to hold a wide variety of Web Applications over it. eyeOS was thought as a new definition of Operating System, where everything inside it can be accessed from everywhere trought a web browser.

875K lines of code

0 current contributors

over 11 years since last commit

23 users on Open Hub

Activity Not Available
4.53333
   
0 Reviews
I Use This
Mostly written in JavaScript
Licenses: AGPL3
Tags ajax alternative browser browser-based cms content css desktop desktop_environment dynamic_content html javascript 17 more...

illumos

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  Analyzed 1 day ago

A community derivative of the OS/Net consolidation from OpenSolaris.

11.5M lines of code

76 current contributors

4 days since last commit

21 users on Open Hub

High Activity
5.0
 
0 Reviews
I Use This
Mostly written in C
Licenses: BSD-3-Clause, common_de...
Tags amd64 distro dtrace filesystem i386 ia32 kernel multithreaded networking nfs opensolaris operating-system 14 more...

HelenOS

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  Analyzed 3 months ago

HelenOS is a microkernel-based multiserver operating system designed from scratch. It decomposes key operating system functionality into many isolated, intensively communicating server processes that reside entirely in user space. HelenOS thus provides a computing environment that has several ... [More] virtues, such as flexibility, increased robustness, well defined explicit interfaces and reduced complexity of individual components as compared to other operating systems. HelenOS runs on seven different processor architectures, ranging from a 32-bit uniprocessor little-endian ARMv4 to a 64-bit multicore big-endian UltraSPARC T1. [Less]

426K lines of code

15 current contributors

4 months since last commit

17 users on Open Hub

Activity Not Available
4.75
   
0 Reviews
I Use This
Mostly written in C
Licenses: BSD-3-Clause
Tags amd64 arm cli filesystem gui ia32 ia64 kernel microkernel mips multiserver networking 8 more...

AROS

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  Analyzed 19 days ago

The AROS Research Operating System is a lightweight, efficient and flexible desktop operating system, designed to help you make the most of your computer. It's an independent, portable and free project, aiming at being compatible with AmigaOS 3.1 at the API level (like Wine, unlike UAE), while ... [More] improving on it in many areas. The source code is available under an open source license, which allows anyone to freely improve upon it. [Less]

6.15M lines of code

18 current contributors

about 1 month since last commit

16 users on Open Hub

High Activity
5.0
 
0 Reviews
I Use This
Mostly written in C
Licenses: AROS_Publ...
Tags amd64 amiga amigaos aros desktop desktop_environment distro kernel m68k operating operating_system operating_system_kernels 9 more...

Kolibri OS

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  Analyzed over 2 years ago

KolibriOS is an open source operating system with a monolithic preemptive, real-time kernel, video drivers, for 32-bit x86 architecture computers, developed and maintained by The KolibriOS Project Team. KolibriOS is a fork of MenuetOS, written entirely in assembly language.

790K lines of code

15 current contributors

almost 3 years since last commit

15 users on Open Hub

Activity Not Available
5.0
 
0 Reviews
I Use This
Mostly written in Assembly
Licenses: gpl
Tags 32bit asm assembly desktop fasm fast floppy gpl gplv2 gui i386 i586 8 more...

MINIX 3

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  Analyzed 1 day ago

MINIX 3 is a new open-source operating system designed to be highly reliable, flexible, and secure. It is loosely based somewhat on previous versions of MINIX, but is fundamentally different in many key ways. MINIX 1 and 2 were intended as teaching tools; MINIX 3 adds the new goal of being usable as ... [More] a serious system on resource-limited and embedded computers and for applications requiring high reliability. This new OS is extremely small, with the part that runs in kernel mode under 4000 lines of executable code. The parts that run in user mode are divided into small modules, well insulated from one another. For example, each device driver runs as a separate user-mode process so a bug in a driver (by far the biggest source of bugs in any OS), cannot bring down the entire OS. [Less]

7.48M lines of code

3 current contributors

almost 4 years since last commit

14 users on Open Hub

Inactive
4.33333
   
0 Reviews
I Use This
Mostly written in C
Licenses: BSD-3-Clause
Tags ash education microkernel operating_system_kernels

GNU Hurd

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  Analyzed about 2 months ago

The GNU Hurd is the GNU project's replacement for the Unix kernel. The Hurd is a collection of servers that run on the Mach microkernel to implement file systems, network protocols, file access control, and other features that are implemented by the Unix kernel or similar kernels (such as Linux).

2.28M lines of code

16 current contributors

3 months since last commit

14 users on Open Hub

Activity Not Available
4.3
   
0 Reviews
I Use This
Mostly written in C
Licenses: gpl
Tags gnumach hurd ia32 microkernel multiserver operating_system_kernels posix symmetric_multi_processing x86

Nexenta

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  Analyzed over 2 years ago

Nexenta Operating System is a free and open source operating system combining the OpenSolaris kernel with GNU application userland. Nexenta Operating System runs on Intel/AMD 32/64bit hardware and is distributed as a single installable CD. Upgrades and binary packages not included on the CD can be ... [More] installed from NexentaOS repository using Advanced Packaging Tool. In addition, source based software components can be downloaded from network repositories available at Debian/GNU Linux and Ubuntu Linux. [Less]

17.7K lines of code

0 current contributors

over 11 years since last commit

14 users on Open Hub

Activity Not Available
4.28571
   
0 Reviews
I Use This
Mostly written in shell script
Licenses: common_de..., gpl
Tags amd64 containers debian distro dtrace filesystem gnu i386 ia32 iscsi kernel multithreaded 22 more...

Syllable operating system family

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  Analyzed over 2 years ago

Syllable is a fork of AtheOS. The goal of Syllable is to create a reliable and easy-to-use open source operating system for the home and small office user.

2.7M lines of code

0 current contributors

over 9 years since last commit

13 users on Open Hub

Activity Not Available
3.75
   
0 Reviews
I Use This
Mostly written in C
Licenses: BSD-3-Clause
Tags alternative desktop_environment distro download freesoftware gui linux news operating operatingsystem operating_system_kernels operating-systems 5 more...