Open Source Mac Operating System Kernels

Browse free open source Operating System Kernels and projects for Mac below. Use the toggles on the left to filter open source Operating System Kernels by OS, license, language, programming language, and project status.

  • Automate contact and company data extraction Icon
    Automate contact and company data extraction

    Build lead generation pipelines that pull emails, phone numbers, and company details from directories, maps, social platforms. Full API access.

    Generate leads at scale without building or maintaining scrapers. Use 10,000+ ready-made tools that handle authentication, pagination, and anti-bot protection. Pull data from business directories, social profiles, and public sources, then export to your CRM or database via API. Schedule recurring extractions, enrich existing datasets, and integrate with your workflows.
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  • Turn traffic into pipeline and prospects into customers Icon
    Turn traffic into pipeline and prospects into customers

    For account executives and sales engineers looking for a solution to manage their insights and sales data

    Docket is an AI-powered sales enablement platform designed to unify go-to-market (GTM) data through its proprietary Sales Knowledge Lake™ and activate it with intelligent AI agents. The platform helps marketing teams increase pipeline generation by 15% by engaging website visitors in human-like conversations and qualifying leads. For sales teams, Docket improves seller efficiency by 33% by providing instant product knowledge, retrieving collateral, and creating personalized documents. Built for GTM teams, Docket integrates with over 100 tools across the revenue tech stack and offers enterprise-grade security with SOC 2 Type II, GDPR, and ISO 27001 compliance. Customers report improved win rates, shorter sales cycles, and dramatically reduced response times. Docket’s scalable, accurate, and fast AI agents deliver reliable answers with confidence scores, empowering teams to close deals faster.
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  • 1
    newRPL

    newRPL

    The classic RPL programming language reimplemented and reimagined.

    This project reimplements from scratch the RPL language made popular by HP programmable calculators, in portable C/C++. The main goal is to release a complete computing environment for various targets. There's currently 4 active targets: the HP 50g, HP39gs and HP40gs calculators and a PC simulator (see the downloads section!). Other ports are planned for the future.
    Downloads: 19 This Week
    Last Update:
    See Project
  • 2
    colorForth
    colorForth is, in Chuck Moore's own words: "A dialect of Forth that uses color to replace punctuation. Includes its own operating system. Produces extremely compact programs. Instant compile from pre-parsed source."
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    Downloads: 21 This Week
    Last Update:
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  • 3
    The objective of the TPM Emulator project is the implementation of a software-based TPM and MTM emulator as well as of an appropriate TCG Device Driver Library (TDDL).
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    Downloads: 31 This Week
    Last Update:
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  • 4
    WinUSB is Windows Portable. WinUSB can install in USB Disks. Modified Windows 9x can install (minimum) 256 MB. Windows 95 with WinUSB supports NTFS, DVD's and more. Portable Modified Windows XP can install, too.
    Downloads: 10 This Week
    Last Update:
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  • Failed Payment Recovery for Subscription Businesses Icon
    Failed Payment Recovery for Subscription Businesses

    For subscription companies searching for a failed payment recovery solution to grow revenue, and retain customers.

    FlexPay’s innovative platform uses multiple technologies to achieve the highest number of retained customers, resulting in reduced involuntary churn, longer life span after recovery, and higher revenue. Leading brands like LegalZoom, Hooked on Phonics, and ClinicSense trust FlexPay to recover failed payments, reduce churn, and increase customer lifetime value.
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  • 5
    MeanOS

    MeanOS

    The smallest and the most powerful operating system.

    The first decentralized, artificially intelligent, MEAN.js stack, operating system. Mean OS is the only operating system hosted anonymous using a P2P network and a suite of non-standard in-browser delivery mechanisms. Mean OS is specifically designed to support both Brave and Tor but is compatible with all other major browsers. Mean OS is Proud to be a BRAVE and TOR supporter, be free!!
    Downloads: 5 This Week
    Last Update:
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  • 6

    UEFI GPT fdisk

    UEFI GTP fdisk is a disk partitionning tool running under UEFI/BIOS

    UEFI GPT fdisk is a port to UEFI of the famous GPT fdisk partitioning tool, see http://sourceforge.net/projects/gptfdisk/ . Now since this program runs directly under UEFI shell you don't need to *boot* the system to convert/edit partition tables.
    Downloads: 8 This Week
    Last Update:
    See Project
  • 7
    PROS

    PROS

    Custom firmware and IDE for the VEX Cortex Microcontroller

    This project has been moved to http://pros.cs.purdue.edu/ PROS is a lightweight and fast alternative operating system for the VEX Cortex Microcontroller. It features multitasking, low-level control, and Wiring compatible functions to harness the full power of the Cortex. With a real-time kernel based on FreeRTOS and a development environment built on Eclipse CDT, PROS uses proven software to increase the reliability and usability of the VEX development system across all three major computing platforms. PROS is currently under active development to make it usable for VEX high school and middle school teams. PROS is intended for advanced VEX users seeking to move beyond competing environments. Eclipse and FreeRTOS have their own licensing agreements. Please see http://www.eclipse.org/legal/epl-v10.html and http://www.freertos.org/a00114.html for details.
    Downloads: 2 This Week
    Last Update:
    See Project
  • 8
    LUnix (little UNIX) is an operating system for the Commodore64 - a famous home computer back in the 80s. It supports TCP/IP networking (SLIP or PPP using a RS232 interface). LUnix aims to look and feel like UNIX.
    Downloads: 6 This Week
    Last Update:
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  • 9
    Prex is a portable real-time operating system for embedded systems. The small, reliable and low power kernel is written in C language based on micro kernel design. File system, UNIX process and networking features are provided by user mode tasks.
    Downloads: 4 This Week
    Last Update:
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  • FusionAuth: Authentication and User Management Software Icon
    FusionAuth: Authentication and User Management Software

    Offer your users flexible authentication options, including passwords, passwordless, single sign-on (SSO), and multi-factor authentication (MFA).

    FusionAuth adds login, registration, SSO, MFA, and a bazillion other features to your app in days - not months.
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  • 10
    Committed to the development of fundamental ACPI (Advanced Configuration and Power Interface) components for Linux. This includes a generic ACPI table parser, AML interpreter, bus and device drivers, policy, user interface, and support tools.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 11
    TORO kernel
    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.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 12
    CapROS is an experimental capability-based operating system, based on EROS, KeyKOS, and Gnosis. Ports exist for the Intel IA-32 and ARM9 architectures.
    Downloads: 2 This Week
    Last Update:
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  • 13
    Fast, multi-threaded OS for PCs and 386+ based embedded systems. Runs many DOS, DPMI and Win32 console programs. 100% assembly with segment protection.
    Downloads: 2 This Week
    Last Update:
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  • 14
    Vodogray Linux
    Vodogray is a fast operating system oriented at creative people, it includes more software for creators and their tasks Source files available on GitHub https://github.com/VodograyLinux I publish news about the distribution and its development in the Telegram channel https://t.me/VodograyNews
    Downloads: 2 This Week
    Last Update:
    See Project
  • 15
    ChaOS

    ChaOS

    A basic command line OS made with Cosmos

    A basic command line OS made with Cosmos. Now supports disks!
    Downloads: 1 This Week
    Last Update:
    See Project
  • 16
    Old Skool Tech
    This project is an effort to develop open source software for all old platforms, like MSX, Commodore, AMIGA, Atari, ..... and collect technical information about old platforms, keeping the "old skool" flame alive.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 17
    This is a fix for the Harmon / Hardon iSub for PowerPC Based Macs, 10.5.6-10.5.8
    Downloads: 1 This Week
    Last Update:
    See Project
  • 18
    Queue is a load-balancing system popular in the 2000s that lets users control their remote jobs in an intuitive, transparent and nearly seamless way. Development versions feature job migration with and without kernel support. GNU Queue continues to be downloaded despite being decommissioned by the FSF in favor of the newer GNU Parallel project. Older versions of the code are archived here on Sourceforge and some later versions on GNU Savannah.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 19
    JINX is a Java-based multi-user Unix-like environment that allows each user to remotely run their own java programs. Also the home of CurseHTTPD, a non-blocking java HTTP server.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 20
    Nemesis is a tiny real time operating system kernel based on x86 PCs. Its main purpose is to serve as a simple but realistic example of an real time OS kernel running on real hardware..the purpose of this is that it can be embedded in small devices lik
    Downloads: 1 This Week
    Last Update:
    See Project
  • 21
    High performance, assembler coded, both desktop and server operating system. Ease of use, ease of programming, joy of power.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 22
    An easy to use installer that enables Mac OS X user to install and use linux on their HFS+ formatted iPods in addition to the Apple Supplied OS. Currently supports 1-4G, Mini, and Photo iPods. Installation on Nano and Video possible but not supported.
    Downloads: 1 This Week
    Last Update:
    See Project
  • 23

    Active Object real-time OS

    AO RTOS is small real time OS based on Active Object concurrency model

    AO-RTOS is a pure object-oriented small footprint real-time operating system for embedded devices. The project is using Active Object (or Actor) concurrency model and finite state machine (FSM) design template as implementation base.
    Downloads: 0 This Week
    Last Update:
    See Project
  • 24
    A scheme (lisp) interpreter written in ARM assembly language (currently: Cortex-M4F,M7, Cortex-A5,A8,A9, Cortex-A53; previously:ARM7TDMI, ARM920T, Cortex-M3) for education, robotics, wearable devices. Tested on Allwinner A64, Amlogic S905, Atmel SAMA5D4, SAME70, SAMV71, NXP LPC4300, RT1050, iMX8M, Samsung S5P6818, ST STM32F4, STM32F7, and TI AM3359, OMAP3530, DM3730, OMAP4430, TM4C1294 chips (previously: NXP LPC-1300,1700,2000, ATMEL AT91SAM7, STM STR711, STR911, STM32, CIRRUS EP9302, LMI LM3S1968, TI OMAP).
    Downloads: 0 This Week
    Last Update:
    See Project
  • 25
    Port of LSX Unix to Elektronika BK-0010 microcomputer.
    Downloads: 0 This Week
    Last Update:
    See Project
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