Showing 1533 open source projects for "z/os"

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  • 1
    Pony OS

    Pony OS

    My Little Unix: Kernels are Magic

    ponyos is a lightweight, UNIX-like operating system developed as a personal hobby project by the creator of ToaruOS. It features a monolithic kernel written in C and aims for a POSIX-compliant environment with a built-from-scratch userland. ponyos includes a graphical interface, dynamic linker, shared libraries, and a package manager. It’s designed for fun, experimentation, and as a platform to learn and play with operating system internals, with surprisingly advanced features given its...
    Downloads: 25 This Week
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  • 2
    os-tutorial

    os-tutorial

    How to create an OS from scratch

    os-tutorial is an open source educational project by cfenollosa that teaches the basics of building an operating system from scratch. The repository provides step-by-step lessons starting with bootloaders and moving through kernel development, interrupts, memory management, and system calls. Each tutorial is accompanied by clear explanations, code examples, and references to deepen understanding.
    Downloads: 16 This Week
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  • 3
    Nightingale OS

    Nightingale OS

    A small operating system where I experiment and learn osdev

    ...Its use of Rust provides strong guarantees around memory safety and eliminates common bugs found in low-level C-based systems. nightingale is ideal for those seeking to study OS development using a modern language with a strong safety model.
    Downloads: 1 This Week
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  • 4
    FontForge

    FontForge

    Free (libre) font editor for Windows, Mac OS X and GNU+Linux

    FontForge is a free (libre) font editor for Windows, Mac OS X and GNU+Linux. Use it to create, edit and convert fonts in OpenType, TrueType, UFO, CID-keyed, Multiple Master, and many other formats. FontForge is a free and open source font editor brought to you by a community of fellow type lovers. You can donate to support the project financially. Type design is visually complex as well as highly technical, however it is easier to begin making type now than ever, partly because of the availability of free tools like FontForge. ...
    Downloads: 85 This Week
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  • 5
    VirtualBox

    VirtualBox

    Virtualization software for x86_64 hardware

    ...It supports a wide variety of host platforms (Linux, Windows, macOS, Solaris, etc.) and guest OSes, enabling, for example, running Linux on a Windows PC, running Windows Server on a Linux host, or even legacy OSes in a controlled environment. This flexibility makes VirtualBox ideal for developers, testers, sysadmins, or hobbyists who need different OS environments, want to test software across systems, or need isolation for development, sandboxing, or security experiments. VirtualBox offers both a user-friendly GUI as well as a command-line interface and headless mode, making it useful for desktop usage as well as server or automated environments.
    Downloads: 88 This Week
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  • 6
    libctru

    libctru

    Homebrew development library for Nintendo 3DS/Horizon OS user mode

    Library for writing user mode ARM11 code for the 3DS (CTR) This library aims to provide the foundations necessary to write 3DS Homebrew, and straightforwardly access the different functionalities provided by the 3DS operating system. It is not meant to provide higher-level functions; to put things in perspective, the purpose of libctru would be to sit between the OS and a possible port of SDL rather than replace it. libctru is just a library and needs a toolchain to function. devkitARM (created by devkitPro) is the officially supported ARM cross-compiling toolchain, which provides the framework necessary to supply a usable POSIX-like environment, with working C and C++ standard libraries; as well as the tools required to compile homebrew in the 3DSX format, and assemble GPU shaders. ...
    Downloads: 8 This Week
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  • 7
    Arrow OS

    Arrow OS

    It is an AOSP based project with an aim of keeping things clean!

    ArrowOS is an AOSP based open source project started with the aim of keeping things simple, clean and neat, both for the Android system and users. We understand the pain of unnecessary and sometimes rarely used mods/features being shipped with custom roms nowadays which may end up causing battery drains and/or memory leaks. This is being strictly avoided on our side keeping everything to a bare minimum, delivering the stable performance all the time without destroying the AOSP interface....
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    Downloads: 1,271 This Week
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  • 8
    Gramine

    Gramine

    A library OS for Linux multi-process applications

    Gramine is a lightweight library-operating system (Library OS) designed to run unmodified Linux applications with minimal dependencies on the host OS, and to offer enhanced isolation and portability. It was formerly known as Graphene, but the project renamed to Gramine to avoid naming conflicts and to reflect its broader ambition beyond the original research prototype. The idea is that instead of running a full guest OS in a VM, you embed your application inside Gramine, which handles the system-call interface, process and thread management, file system, and network abstractions — everything the application expects — but strips out the overhead and complexity of a full OS stack. ...
    Downloads: 0 This Week
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  • 9
    Lingmo OS
    Lingmo GNU/Linux (Lingmo OS) is a desktop based Linux operating system developed based on the open-source Debian kernel and adapted to the amd64 architecture. It has a beautiful desktop environment, software that is compatible with the desktop environment, and a unified UI style. The goal of Lingmo GNU/Linux is to provide users with a luxurious and practical desktop environment as well as a smooth experience on low performance hardware.
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    Downloads: 531 This Week
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  • 10
    86Box

    86Box

    Emulator of x86-based machines based on PCem

    ...Lots of supported peripherals including video adapters, sound cards, network adapters, hard disk controllers, and SCSI adapters. MIDI output to Windows built-in MIDI support, FluidSynth, or emulated Roland synthesizers. Supports running MS-DOS, older Windows versions, OS/2, many Linux distributions, or vintage systems such as BeOS or NEXTSTEP, and applications for these systems.
    Downloads: 79 This Week
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  • 11
    Br OS
    O nome Br OS tem dois significados, Br vem de Brasil, o país de origem do sistema, OS é Operating System, e a junção do nome fica Bros, que é uma gíria norte americana para Brothers, que significa Irmãos. Basicamente o que queremos dizer é que nosso sistema foi feito para unir pessoas, seja pelo conteúdo gerado por ele, ou pela comunidade que ele forma.
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    Downloads: 495 This Week
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  • 12
    Urbit

    Urbit

    An operating function

    ...It solves the hard problems of implementing a peer-to-peer network (including identity, NAT traversal, and exactly-once delivery) in the kernel so app developers can focus on business logic. The entire OS is a single pure function that provides application developers with strong guarantees: automated persistence and memory management, repeatable builds, and support for hot code reloading. Urbit is a personal OS designed from scratch to run peer-to-peer applications. A clean-slate OS and network for the 21st century.
    Downloads: 1 This Week
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  • 13
    OpenCorePkg

    OpenCorePkg

    OpenCore bootloader

    OpenCorePkg is an open-source, modular UEFI (Unified Extensible Firmware Interface) bootloader and development framework, primarily designed to enable macOS booting on non-Apple hardware (Hackintosh). It includes Apple-specific UEFI drivers, utilities for macOS installation support, and shared libraries used across Acidanthera projects. Apple disk image loading support. Apple keyboard input aggregation. Apple PE image signature verification. Apple UEFI secure boot supplemental code. Audio...
    Downloads: 150 This Week
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  • 14
    LZ4

    LZ4

    Extremely fast compression algorithm

    ...A high compression derivative, called LZ4_HC, is available, trading customizable CPU time for compression ratio. LZ4 library is provided as open-source software using a BSD license. This benchmark simulates simple "static content transfer" scenario such as OS Kernel compression or video game's static assets (text/images/tables/scripts/etc) which loading from Flash Memory / HDD / SSD. In this case, compression time is completely ignored. Because only content developers compress the data at once and usually they don't care about its computational cost. But they always care end user's experience a.k.a. ...
    Downloads: 282 This Week
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  • 15
    GCC C compiler for MVS 3.8, MVS/XA, OS/390, z/OS and VM, z/VM, DOS/VS, z/VSE IBM mainframe computers. Plus MVS/380, VM/380, VSE/380 from Jujitsu. Note that the latest dev source and PC executables can be found in custom.zip and customb.zip at http://pdos.zip
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    Downloads: 6 This Week
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  • 16
    YARA

    YARA

    The pattern matching swiss knife for malware researchers

    ...Each description, a.k.a rule, consists of a set of strings and a boolean expression which determines its logic. YARA is multi-platform, running on Windows, Linux and Mac OS X, and can be used through its command-line interface or from your own Python scripts with the yara-python extension. YARA-CI may be a useful addition to your toolbelt. This is GitHub application that provides continuous testing for your rules, helping you to identify common mistakes and false positives. If you plan to use YARA to scan compressed files (.zip, .tar, etc) you should take a look at yextend, a very helpful extension to YARA developed and open-sourced by Bayshore Networks.
    Downloads: 29 This Week
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  • 17
    egos-2000

    egos-2000

    Helping students read all the code of a teaching operating system

    egos-2000 is a minimalist operating system built for educational and research purposes, offering a simplified kernel and runtime environment for exploring OS concepts. It runs on QEMU and is written in C/C++ with a focus on clarity and modularity. The system includes a basic filesystem, process management, and syscall interface, making it ideal for understanding core OS principles. egos-2000 is particularly well-suited for students learning about kernels, user-space interaction, and boot-time execution in a clean, hands-on environment.
    Downloads: 2 This Week
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  • 18
    ravynOS

    ravynOS

    A BSD-based OS project that aims to provide an experience with MacOS

    We love macOS, but we’re not a fan of the ever-closing hardware and ecosystem. So we are creating ravynOS, an OS aimed to provide the finesse of macOS with the freedom of FreeBSD. This is a developer preview image that’s mainly intended for helping build the system. We recommend running in a virtual machine, although it should work on any hardware supported by FreeBSD-CURRENT (14.0) with at least 2GB (8GB recommended) RAM. PLEASE NOTE: On 2022-02-14, we decided to abandon the current path of using X11/KDE desktop components and write from scratch a new UI that will align better with our goals. ...
    Downloads: 23 This Week
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  • 19
    ToaruOS

    ToaruOS

    Hobby operating system, bootloader, kernel, drivers, C library

    ...Through out the project, ToaruOS has also attracted quite a few beginner OS developers who have tried to use it as a reference.
    Downloads: 23 This Week
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  • 20
    tmux

    tmux

    tmux is a terminal multiplexer

    tmux is a terminal multiplexer: it enables a number of terminals to be created, accessed, and controlled from a single screen. tmux may be detached from a screen and continue running in the background, then later reattached. This release runs on OpenBSD, FreeBSD, NetBSD, Linux, OS X and Solaris. tmux depends on libevent 2.x, and on ncurses. To build tmux, a C compiler (for example gcc or clang), make, pkg-config and a suitable yacc (yacc or bison) are needed. Some platforms provide binary packages for tmux.
    Downloads: 67 This Week
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  • 21
    Xash3D FWGS Engine

    Xash3D FWGS Engine

    Xash3D FWGS engine

    ...Legacy mods and maps for supported games can often be used unchanged (or with minimal modifications), preserving the classic experience. At the same time, the engine’s enhancements — modern input support (gamepad, touch), modern OS compatibility, cross-platform builds.
    Downloads: 141 This Week
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  • 22
    hashcat

    hashcat

    World's fastest and most advanced password recovery utility

    hashcat is the world's fastest and most advanced password recovery utility, supporting five unique modes of attack for over 300 highly-optimized hashing algorithms. hashcat currently supports CPUs, GPUs, and other hardware accelerators on Linux, Windows, and macOS, and has facilities to help enable distributed password cracking. Download the latest release and unpack it in the desired location. Please remember to use 7z x when unpacking the archive from the command line to ensure full file...
    Downloads: 89 This Week
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  • 23
    simplewall

    simplewall

    Simple tool to configure Windows Filtering Platform (WFP)

    simplewall is an open-source Windows application that provides a user-friendly firewall control interface powered by Windows Filtering Platform (WFP), enabling users to block or allow outgoing and incoming network connections without diving into complex OS settings or command-line tools. The app presents a clean, intuitive UI where users can define rules based on process names, IP addresses, ports, and protocols, making it possible to restrict apps from accessing the internet or control specific traffic flows with fine granularity. Because simplewall leverages WFP directly, it operates at a low level in the network stack, ensuring reliable enforcement of rules system-wide while remaining lightweight. ...
    Downloads: 63 This Week
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  • 24
    Memtest86+

    Memtest86+

    Stand-alone memory tester for x86 and x86-64 architecture computers

    Memtest86+ is a free, open-source, stand-alone memory diagnostic tool designed to thoroughly test system RAM beyond standard BIOS checks. It runs independently of any operating system, allowing it to access nearly all available memory without software or UEFI library limitations. Supporting x86, x86-64, and LoongArch64 architectures, Memtest86+ works on a wide range of modern and legacy hardware platforms. The tool can be booted directly via BIOS or UEFI, or through compatible bootloaders,...
    Downloads: 60 This Week
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  • 25
    NVIDIA Linux Open GPU Kernel Module

    NVIDIA Linux Open GPU Kernel Module

    NVIDIA Linux open GPU kernel module source

    ...This code base is shared with NVIDIA's proprietary drivers, and various processing is performed on the shared code to produce the source code that is published here. When packaged in the NVIDIA .run installation package, the OS-agnostic component is provided as a binary.
    Downloads: 4 This Week
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