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Dev tools · alternatives · 2026

24 alternatives to Sixty5o2

A mini operating system for Ben Eater's 6502 computer

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites. Sixty5o2 launched in 2021; newer entries below may have overtaken it.

  1. 1

    Micro Kernel / Bootloader for Ben Eater's 6502 Computer - janroesner/sixty5o2

    2020 · github.com · its alternatives →

  2. 2VB
  3. 3

    Yet another 6502 emulator that one day dreams of being an Atari 2600. - haldean/x6502

    2013 · github.com · its alternatives →

  4. 4

    The 6502ctl project is an Arduino controller for the 6502 CPU. The controller controls all 6502 pins, including the clock signal and interrupts, and simulates an address and data bus with attached memory and an output peripheral. The controller includes a clock-cycle debugger with disassembler. An assembler is also included with the project.

    2022 · github.com · its alternatives →

  5. 5MI
  6. 6

    Finally got my hobby OS up and running on real hardware. I love the old IBM thinkpads, so thought it was the perfect machine to get it working on. Been working on it for quite some time now, but this has been a big milestone!

    2025 · github.com · its alternatives →

  7. 7IM

    Hey HN! A few years ago someone kept trying to steal my motorcycle, so I decided to make a small camera with really long battery life to catch them. The hardware/software is totally open source, but the companion app only supports macOS currently. (I'm a big fan of native apps, and didn't want to block releasing on Linux/Windows support.) I wrote some blog posts about the process: PCB design: https://toaster.llc/blog/pcb Enclosure design: https://toaster.llc/blog/enclosure Image pipeline:…

    2024 · toaster.llc · its alternatives →

  8. 8

    A Flipper Zero clone, but cheapest, DIY and simply Open Source, made with Arduino IDE - lraton/FlopperZiro

    2025 · github.com · its alternatives →

  9. 9

    Run KolibriOS, Linux or Windows 98 in your browser

    2013 · copy.sh · its alternatives →

  10. 10H1

    This is a 16bit CPU+Minicomputer from pure 74 series logic. It has user/kernel modes, virtual memory, prioritized IRQ's and DMA. It has a full C compiler and a unix-like OS. It's still in development.

    2023 · sol-1.org · its alternatives →

  11. 11
  12. 12

    A Simple Unix-like operating system. Contribute to ozkl/soso development by creating an account on GitHub.

    2019 · github.com · its alternatives →

  13. 13

    Hey HN, Recently built an Apple II emulator and at the same time was getting into Tiny Tapeout and decided it would be cool to build a cycle-accurate 6502 CPU and an MCU for it. It's cycle accurate and the core itself should be 100% compatible with a stock MOS 6502 (would need to still test this though!). Tested on some FPGAs (fomu, ulx3s) and works great, hoping to get it taped out in the upcoming IHP26a shuttle. Also as part of the project I built a bus multiplexer to allow memory/bus access from an RP2040 to work around the limited pin count on Tiny Tapeout. This let's you load up…

    Feb 2026 · github.com · its alternatives →

  14. 14

    2nd generation with faster processor and more memory

    2015 · raspberrypi.org · its alternatives →

  15. 15

    The operating system for smart frames. Runs on a Raspberry Pi or ESP32, renders on e-ink, HDMI and LCD displays. Standalone, self-hosted, or managed from FrameOS Cloud - everything renders on the device.

    2024 · frameos.net · its alternatives →

  16. 16

    Disclaimer, I have not yet placed the order. But JLCPCB have so far excepted all files and config so I have 1 more button to press. If anyone see some obvious mistake please send feedback. This project grew out of curiosity. Loved the https://monster6502.com/ project but that is on another level. Here I tried to stay "reasonable" and added a Raspberry Pico 2 W on the back to drive it all. But also, was curious if Claude could pull this off. Guess I will have to place that order to call the cards.

    Jul 2026 · epatel.github.io · its alternatives →

  17. 17IW
  18. 18

    A clock app for my Apple ][ clone in 6502 assembly, using interrupts generated by an inductive proximity sensor and a physical pendulum clock. I wanted to polish the code a bit more before sharing (I especially dislike the self modifying code part), but the computer seems to have developed a hardware problem lately and it keeps crashing (bad RAM chip most likely), so I am sharing as is.

    2024 · github.com · its alternatives →

  19. 19

    Your tiny, tiny $15 computer

    2021 · raspberrypi.com · its alternatives →

  20. 20AT
  21. 21MH

    Nov 2025 · astral-os.org · its alternatives →

  22. 22

    Shuru is a lightweight sandbox that spins up Linux VMs on macOS using Apple's Virtualization.framework. Boots in about a second on Apple Silicon, and everything is ephemeral by default. There's a checkpoint system for when you do want to persist state, and sandboxes run without network access unless you explicitly allow it. Single Rust binary, no dependencies. Built it for sandboxing AI agent code execution, but it works well for anything where you need a disposable Linux environment.

    Feb 2026 · shuru.run · its alternatives →

  23. 23

    Hello HN, I've been working on a simple OS for tinkering and running bare metal apps on vintage PCs. Since I couldn't quite decide whether to target pure 16-bit, or slightly more capable 32-bit machines, I ended up with two separate versions: - GentleOS/32 (https://github.com/luke8086/gentleos32) works on i386+, requires 4MB of RAM and VGA display supporting 640x480x16 mode or any 256-color VESA mode. - GentleOS/16 (https://github.com/luke8086/gentleos) works on 80186+, requires less than 192KB of RAM and a CGA display supporting 320x200x4…

    Jun 2026 · github.com · its alternatives →

  24. 24KA

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →