Open-source operating-systems software
1492 open-source libraries, tools and applications tagged operating-systems, ranked by how closely operating-systems is their primary purpose, then by adoption and maintenance health. Each entry links to a page with sources, use cases and when to choose or avoid it.
1492 products, primary matches first, then adoption-weighted; health v2 shown.
| Product | Health v2 | Stars | Maturity |
|---|---|---|---|
| cocoabits/Popup A Cocoa/Objective-C demo project showing a custom popover window that appears from an icon in the macOS status bar. It serves as sample cod… | 10 | 1009 | abandoned |
| libuv/libuv libuv is a cross-platform C library providing asynchronous I/O via a full-featured event loop backed by epoll, kqueue, IOCP, and event port… | 90 | 27272 | stable |
| .NET Runtime The official .NET runtime, base class libraries, and shared host source repository maintained by Microsoft and the .NET Foundation. It prov… | 100 | 18367 | stable |
| DustinBrett/daedalOS daedalOS is a desktop environment that runs entirely in the browser, built with JavaScript. It provides a window manager, file system, task… | 77 | 13053 | active |
| RetroPie A shell-based setup script that installs and configures RetroArch, emulator cores, and the EmulationStation front end on Raspberry Pi, ODro… | 66 | 10420 | active |
| flightlessmango/MangoHud MangoHud is a Vulkan and OpenGL overlay that displays real-time performance metrics like FPS, frametimes, CPU/GPU load, and temperatures in… | 88 | 9128 | active |
| Vesktop Vesktop is a custom open-source Discord desktop client with Vencord preinstalled, offering better performance, built-in telemetry blocking,… | 94 | 8524 | active |
| cilium/ebpf ebpf-go is a pure-Go library for loading, modifying, and attaching eBPF programs to hooks in the Linux kernel, with no dependency on libbpf… | 89 | 7998 | stable |
| ajenti/ajenti Ajenti is a modular Linux and BSD server administration panel built with Python 3 and AngularJS. It ships with many stock plugins for syste… | 84 | 7967 | active |
| PCILeech PCILeech is DMA attack software that uses PCIe hardware devices (or software memory acquisition methods) to read and write target system me… | 62 | 7945 | active |
| win12-online/win12 Win12 Online is a web-based recreation of a hypothetical Windows 12 desktop experience, built entirely with HTML, CSS, and JavaScript. It s… | 76 | 7267 | active |
| Shadowsocks ShadowsocksX-NG is a macOS GUI client for the Shadowsocks proxy protocol, rewritten in Swift with ss-local running as a background Launch A… | 23 | 32878 | maintenance |
| TableProApp/TablePro TablePro is a free, open-source, native macOS (and iOS/iPadOS) database client supporting 29 SQL and NoSQL engines through native drivers, … | 80 | 6286 | active |
| qilingframework/qiling Qiling is a Python-based binary emulation framework built on Unicorn Engine that emulates executables across multiple platforms (Windows, m… | 85 | 6110 | active |
| TsudaKageyu/minhook MinHook is a minimalistic, lightweight C library for intercepting (hooking) x86 and x64 function calls on Windows, using a trampoline/detou… | 65 | 6012 | stable |
| sezanzeb/input-remapper A Linux GUI application and daemon that remaps input devices, letting users map any key, mouse movement, joystick, or trigger to any other … | 80 | 5960 | active |
| AidLux (AidLearning) AidLux (originally AidLearning) is an AIoT development platform that runs a native Ubuntu Linux environment with GUI, deep learning tooling… | 63 | 5812 | active |
| pfSense pfSense is a free, open-source network firewall and router distribution based on FreeBSD with a custom kernel, managed entirely through a w… | 62 | 5742 | stable |
| beclab/Olares Olares is an open-source personal cloud operating system built on Kubernetes that turns your own hardware into a self-hosted AI platform fo… | 90 | 5299 | active |
| OpenWiFi Open-source full-stack IEEE 802.11/Wi-Fi design based on Software Defined Radio, including a Linux mac80211-compatible driver and software,… | 66 | 4809 | active |
| guysoft/FullPageOS FullPageOS is a Raspberry Pi distribution that boots directly into a full-screen Chromium browser displaying a single webpage. It is built … | 61 | 4484 | active |
| linuxserver/docker-webtop Docker images from LinuxServer.io that run a full Linux desktop environment (KDE, XFCE, MATE, i3, etc.) accessible from a web browser, base… | 96 | 4449 | active |
| zyantific/zydis Zydis is a fast, lightweight x86/x86-64 disassembler and encoder library written in C with zero dependencies, not even libc. It supports al… | 62 | 4385 | active |
| ufrisk/MemProcFS MemProcFS is an memory forensic tool that exposes physical memory, memory dump files, and live memory acquisition sources as files in a vir… | 84 | 4356 | active |
| FRRouting/frr FRRouting (FRR) is a free, open-source IP routing protocol suite for Linux and Unix platforms, descended from Quagga. It implements and man… | 97 | 4320 | stable |
| HyperDbg HyperDbg is an open-source, hypervisor-assisted debugger for Windows (with Linux support in development) that uses Intel VT-x and EPT to de… | 94 | 4137 | active |
| rafaelmardojai/firefox-gnome-theme A CSS-based userChrome theme that makes Firefox look like a native GNOME Adwaita application. It is installed via scripts or the Add Water … | 82 | 3906 | active |
| ilysenko/codex-desktop-linux An unofficial community-maintained Linux distribution of OpenAI's ChatGPT desktop app (formerly Codex), repackaged from the official signed… | 61 | 3893 | active |
| ipsw ipsw is a Go-based command-line research framework for downloading, parsing, and analyzing Apple iOS and macOS firmware (IPSW/OTA files), M… | 95 | 3811 | active |
| olegos2/mobox Mobox is a shell-based installer and management tool that runs Windows x86/x86_64 applications on Android via Termux, using Box64/Box86 for… | 10 | 3747 | active |
| ExTV/Podroid Podroid is a rootless Android app that boots a real Alpine Linux virtual machine (via QEMU or hardware-accelerated AVF) with a custom kerne… | 79 | 3496 | active |
| Smithay/smithay Smithay is a Rust library providing building blocks for creating Wayland compositors, implementing core Wayland protocols and common extens… | 73 | 3276 | active |
| PartialVolume/shredos.x86_64 ShredOS is a small bootable Linux distribution for securely erasing disks using nwipe on x86 PCs, servers, and Intel-based Macs. It boots d… | 95 | 3231 | active |
| DynamoRIO/dynamorio DynamoRIO is a runtime code manipulation system that supports arbitrary code transformations on executing programs, with a powerful instruc… | 95 | 3181 | active |
| the-tcpdump-group/libpcap libpcap is a system-independent C/C++ library providing a portable API for user-level network packet capture, with BPF-based filtering and … | 76 | 3174 | stable |
| microvm-nix/microvm.nix A Nix Flake for building and running lightweight NixOS MicroVMs on NixOS/Linux and macOS hosts using one of eight hypervisors such as QEMU,… | 77 | 3025 | active |
| SONiC SONiC (Software for Open Networking in the Cloud) is a free, open-source network operating system based on Linux that runs on switches from… | 77 | 2942 | active |
| panda-re/panda PANDA is an open-source Platform for Architecture-Neutral Dynamic Analysis built on the QEMU whole-system emulator, supporting record and r… | 91 | 2782 | active |
| open-mpi/ompi Open MPI is an open-source, standards-conformant implementation of the Message Passing Interface (MPI) for high-performance computing, deve… | 76 | 2663 | stable |
| owerdogan/whoami-project Whoami is a user-friendly privacy and anonymity CLI tool for Debian and Arch-based Linux distributions. It bundles 9+ modules such as IP ch… | 40 | 2313 | active |
| cyring/CoreFreq CoreFreq is a CPU monitoring and tuning tool for 64-bit processors that combines a Linux kernel module with a terminal UI to report frequen… | 95 | 2246 | active |
| bytecode77/r77-rootkit r77 is a fileless ring 3 (userland) rootkit for Windows that hides files, processes, registry keys, services, and network connections using… | 71 | 2199 | active |
| iPXE iPXE is the leading open source network boot firmware, providing a full PXE implementation enhanced with features like booting from HTTP/HT… | 76 | 2083 | active |
| Sergeydigl3/zapret-discord-youtube-linux A plug-and-play Linux shell script adapter that ports Flowseal's zapret-discord-youtube and bol-van's zapret for bypassing DPI-based thrott… | 73 | 2049 | active |
| luigirizzo/netmap Netmap is a framework for extremely fast packet I/O from userspace, implemented as a kernel module for FreeBSD, Linux, and Windows. It incl… | 62 | 1973 | stable |
| Epsilon Epsilon is a high-performance operating system for the NumWorks graphing calculator, written in C++, with eleven apps covering the high sch… | 61 | 1957 | active |
| PolyHook PolyHook 2.0 is a C++20 library for hooking functions at runtime on x86 and x64 architectures. It supports multiple hooking techniques (inl… | 69 | 1902 | active |
| xorvoid/sectorc SectorC is a C compiler written in x86-16 assembly that fits entirely within a 512-byte x86 boot sector. It supports a small but usable sub… | 56 | 1862 | active |
| OpenCCU/OpenCCU OpenCCU (formerly RaspberryMatic) is a free, Buildroot-based open-source operating system that turns CCU3/ELV-Charly hardware, Raspberry Pi… | 94 | 1845 | active |
| Axenide/Ambxst Ambxst is a highly customizable desktop shell for Wayland compositors like Hyprland, Niri, and MangoWC, built on Quickshell with QML and a … | 85 | 1839 | active |
| FuzzyIdeas/Clop Clop is a macOS menu bar application that automatically optimises images, videos, and PDFs as soon as they are copied to the clipboard, min… | 99 | 1838 | active |
| emp3r0r emp3r0r is an open-source post-exploitation framework and command-and-control (C2) system written in Go, targeting Linux and Windows hosts.… | 95 | 1790 | active |
| slgobinath/safeeyes Safe Eyes is a Linux desktop application that reminds users to take regular breaks to prevent eye strain and repetitive strain injury. It i… | 94 | 1759 | active |
| libvirt/libvirt Libvirt is a portable, long-term stable C API and toolkit for managing virtualization technologies across many operating systems and hyperv… | 77 | 1738 | stable |
| miniupnp/miniupnp MiniUPnP is a lightweight ANSI C implementation of the UPnP Internet Gateway Device (IGD) specifications, comprising a client library (mini… | 96 | 1612 | stable |
| richfelker/musl-cross-make A makefile-based build system for producing musl libc-targeting GCC cross compilers. It automates downloading, patching, and building GCC, … | 68 | 1588 | active |
| bpftime bpftime is a high-performance userspace eBPF runtime and general extension framework that lets existing eBPF tools run without kernel privi… | 84 | 1585 | active |
| janmojzis/tinyssh TinySSH (tinysshd) is a minimalistic SSHv2 server written in C with under 100,000 words of code, implementing only a secure subset of the p… | 95 | 1535 | active |
| contiki-ng/contiki-ng Contiki-NG is an open-source, cross-platform operating system for next-generation IoT devices, forked from the original Contiki OS. It focu… | 84 | 1532 | active |
| OLIMEX/OLINUXINO OLinuXino is a family of fully open-source, open-hardware (OSHW certified) industrial-grade ARM single board computers from Olimex, with pu… | 66 | 1493 | active |
| zodiacon/AllTools A collection of Pavel Yosifovich's reasonably stable Windows system tools, including process/driver monitors, kernel object viewers, PE fil… | 83 | 1443 | active |
| sysprog21/shecc shecc is a self-hosting, educational optimizing C compiler written in ANSI C that targets 32-bit ARMv7-A and RV32IM (RISC-V) Linux systems.… | 75 | 1397 | active |
| AlfredoSequeida/hints Hints is a Linux desktop application that lets you navigate GUI applications entirely with your keyboard by overlaying typeable hints on in… | 76 | 1381 | active |
| sashiko-dev/sashiko Sashiko is an agentic code review system for the Linux kernel that ingests patches from mailing lists, GitHub PRs, GitLab MRs, or local git… | 61 | 1346 | active |
| tobert/pcstat pcstat is a small Go command-line utility that reports Linux page cache statistics for individual files using the mincore(2) syscall. It sh… | 23 | 1310 | stable |
| solo-io/bumblebee BumbleBee is a CLI tool ('bee') that builds, runs, and distributes eBPF programs as OCI images, automatically generating the userspace comp… | 26 | 1302 | active |
| FreeIPA FreeIPA is an integrated security information management solution providing centralized identity, authentication, and access control for Li… | 77 | 1295 | stable |
| tzmax/V2RayXS V2RayXS is a native macOS GUI client for Xray-core, a maintained fork of the archived V2RayX project. It supports VLESS and XTLS protocols,… | 82 | 1258 | active |
| hgaiser/moonshine Moonshine is a headless streaming host server written in Rust that lets you stream games from a Linux PC to devices running Moonlight clien… | 92 | 1252 | active |
| olvvier/apple-silicon-accelerometer A Python library that reads the undocumented MEMS accelerometer and gyroscope on Apple Silicon MacBooks via IOKit HID, along with lid angle… | 44 | 1243 | active |
| Fingerprint authentication system A Python driver and DBus service for Validity fingerprint sensors on Linux, integrating with fprintd for biometric authentication. It suppo… | 40 | 1241 | active |
| GJDuck/e9patch E9Patch is a static binary rewriting tool for x86_64 Linux ELF executables and shared objects, producing patched binaries that work as drop… | 77 | 1156 | active |
| AlchemillaHQ/Sylve Sylve is an open-source web-based management platform for FreeBSD that unifies Bhyve virtual machines, FreeBSD Jails, ZFS storage, networki… | 86 | 1124 | active |
| bitdefender/bddisasm bddisasm is a fast, lightweight x86/x64 instruction decoder library written in C with no external dependencies, no memory allocation, and t… | 87 | 1086 | active |
| vsergeev/c-periphery A small MIT-licensed C library providing userspace access to Linux peripheral I/O interfaces including GPIO, LED, PWM, SPI, I2C, MMIO, and … | 44 | 1068 | stable |
| exein-io/pulsar Pulsar is a modular, eBPF-powered runtime security and observability tool for Linux devices, written in Rust and designed for IoT and edge … | 87 | 1054 | active |
| J-x-Z/cocoa-way Cocoa-Way is a native macOS Wayland compositor written in Rust that renders Linux desktop applications using Apple's Metal API. It acts as … | 79 | 1052 | active |
| nygard/class-dump class-dump is a command-line utility that examines the Objective-C runtime information in Mach-O binaries and generates Objective-C header … | 23 | 3587 | maintenance |
| topjohnwu/zygisk-module-sample An official template repository by the Magisk author for building Zygisk modules, which inject code into Android's Zygote process. It inclu… | 10 | 1046 | stable |
| UnnoTed/wireguird A GTK-based graphical GUI client for WireGuard on Linux, mimicking the official Windows WireGuard client. It lists tunnels from /etc/wiregu… | 55 | 1036 | active |
| Kyle-Ye/XcodeLLMEligible A shell-based utility that overrides macOS eligibility checks to enable Xcode LLM, Apple Intelligence, and iPhone Mirroring on unsupported … | 10 | 3099 | maintenance |
| xoreaxeaxeax/rosenbridge Rosenbridge is a security research project that documents a hardware backdoor in some VIA C3 x86 processors, allowing userland code to bypa… | 32 | 2618 | maintenance |
| taviso/ctftool An interactive command-line tool for exploring the CTF (Clipboard/Text Services Framework) protocol used by Windows Text Services. It suppo… | 23 | 1668 | maintenance |
| attaswift/Attabench Attabench is a macOS microbenchmarking application for Swift that measures the performance of low-level algorithms across varying input siz… | 23 | 1273 | maintenance |
| Ilya114/Box64Droid Box64Droid is a set of Python scripts that automate installing a preconfigured rootfs with Box64, Box86, Wine, DXVK, and D8VK on Android, e… | 54 | 1087 | maintenance |
| torvalds/test-tlb A small C benchmark tool by Linus Torvalds that measures memory access latency and TLB behavior across working-set sizes from a few kilobyt… | 32 | 1065 | maintenance |
| fangshufeng/MachOView MachOView is a macOS GUI application for browsing and analyzing Mach-O binary files, a maintained fork of the original gdbinit/MachOView th… | 23 | 1044 | maintenance |
| b-nnett/grok-bot-0.18-reconstructed An unofficial, source-oriented reconstruction of the Grok Bot 0.18.0 macOS Electron app, with readable TypeScript implementations of its ru… | 10 | 3521 | experimental |
| Aurae Aurae is a memory-safe distributed systems runtime daemon written in Rust that acts as a process manager and PID-1 initialization system fo… | 66 | 1914 | experimental |
| jiangxufeng/v2rayL v2rayL is a Linux GUI client for V2Ray built with PyQt5, supporting vmess and shadowsocks protocols with subscription management, QR code c… | 10 | 3113 | abandoned |
| ambrop72/badvpn BadVPN is a collection of C networking tools: the NCD scripting language/daemon for network configuration, a tun2socks network-layer proxif… | 10 | 1932 | abandoned |
| paradiseduo/ShadowsocksX-NG-R8 A macOS ShadowsocksR (SSR) proxy client, a fork of ShadowsocksX-NG-R, used to route traffic through ShadowsocksR servers to bypass censorsh… | 10 | 1359 | abandoned |
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