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Stop vibe-debugging.
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This is a simulation of an open CPU, called 67-80-85. It tries to implement a simple, efficient CPU. It includes the simulator, an assembler, a sample code for a boot loader (ROM), a microkernel prototype and tests. - "The 3-legged shinning steel horse
The NFS/RDMA project is a reference implementation of a new RDMA-capable ONC RPC transport for use by Linux kernel NFS. This transport implementation is now available as part of the Linux kernel. The code is also available separately under a dual GPL/BSD
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Protical5 - A 32-bit hobby OS for the x86 processor. Coded in assembly and C, this project aims for no compliance with any OS standards or special performance. A project based solely on the ideas of having fun and learning.
DrKnock is a Dynamic Port Knocking solution based on sig2knock (http://www.security.org.sg/code/portknock1.html). Client and server work on both Unix and Windows.
Java-RFID is a Java programming library for RFID. Its goal is to create an RFID kit-agnostic API ala JDBC. Thus, programmers will write the same code to communicate with any RFID kit. It has been tested with Texas Instruments and Microchip RFID kits.
Releases by No Name Development. All original code is released under the zlib/libpng License, the source to No Name MAME is released under MAME's own license.
Hermes is a P2P middleware. It's not a framework, but it's a shell over the existing frameworks. This shell is made in such a fashion that it's possible to the app developer to change the underlying framework without any changes to his app code.
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SECU86 is Standard Engine Control Unit x86. The project goal is to develop a standard computer and OS (opensource) that would work on any car. It'll be based on the x86 processor and will try to replace the poor standard ECU that comes with any car.
A general purpose Java component to poll directories and asynchronously notify client code of incoming files. It's instrumented via JMX and controllable (also) via a JMX agent, like JBoss' JMX console. Not updated frequently - because it just works
PCSX2 For Unix is aimed towards giving PCSX2 - The Playstation 2 Emulator - better Unix support, such as Linux, FreeBSD, and hopefully even more *nix platforms. #pcsx2 on irc.freenode.org
KenaxOS, originally named AOS (An Operating System), is a project to design a new OS that is developer friendly (having an excellent interface for software development), written mainly in C and some Intel syntax Assembly.
The Samsung ML-1210 printer works perfect under Win32, under linux (not so good), but not under Win64. This tool is not a complete driver, even presently not a 64-bit, but it allows to print graphic files. It uses code from ghostscript 5.10 for linux.
An implementation of the Model-View-Controller (MVC) design pattern based on the Jakarta Struts Framework. Includes a core library (Horizon), a servlet container (Stratus), and a Server Pages Engine (Phase). Resembles the J2EE web container environment.
"Distributed breve" (distbreve) is an open-source software package to make the process of implementing asynchronous, parallelizable steve code running under the breve simulation environment easily distributable amongst as many compute nodes as possible.
A new operating system for mobile, IOT, servers and desktops
NuDawn started as an OS/2 emulation for WINE and now has new direction to be an open source operating system supporting legacy hardware that the OEM no longer supports. NuDawn is a green OS, hence keeping your electronics out of the landfill.
The Trion Object Oriented Operating system is an OS that is designed to meet the needs for the 21st century, with a kernel written in C++ and modelled in UML, and lots of features. The project is run by a team of OSDev.org community members.
Apple IIe emulator for Palm OS. Appalm uses uses certain techniques to improve performance which subvert some of the standard protection mechanisms of Palm OS. Appalm should not be used on machines with important data.
Affnity is a hobby operating system, to help it's developer(s) understand the concepts of operating systems development and low level programming in C, C++, assembly.