Dev tools · alternatives · 2026

24 alternatives to NotOS

Tiny Operating System in the browser.

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. NotOS launched in 2022; newer entries below may have overtaken it.

1. 1
   WebOS▲10

   A full operating system in your browser

   2025 · webos.ct.ws · its alternatives →

2. 2
   Building an HTML5 Desktop environment with a minimal server component▲68

   Not really an oprating system, Just a pile of javascript pretending to be a Desktop Environment - Lerc/notanos

   2013 · github.com · its alternatives →

3. 3
   exaequOS - a new OS running in a web browser▲216

   exaequOS, your browser is your computer

   2023 · exaequos.com · its alternatives →

4. 4
   xOS – a 32-bit OS for the PC▲115

   2016 · github.com · its alternatives →

5. 5
   Noto Link▲82

   A powerful Notion URL shortener and beautifier.

   2022 · noto.tools · its alternatives →

6. 6MO
   Minoca OS – A new lightweight kernel, completely from scratch▲168

   2016 · minocacorp.com · its alternatives →

7. 7JA
   JanOS – A new OS that turns your smartphone into an IoT board▲123

   2015 · janos.io · its alternatives →

8. 8
   Neverinstall 2.0▲368

   Your browser is the new operating system

   2022 · neverinstall.com · its alternatives →

9. 9
   CoreOS, a Linux distro for containers▲417

   An application innovation platform delivering a comprehensive experience with tools to empower organizations to modernize and build new applications, accelerate AI adoption, and fuel growth.

   2013 · coreos.com · its alternatives →

10. 10
    Javascript operating system▲57

    An operating system written in JavaScript. Contribute to haileys/jsos development by creating an account on GitHub.

    2012 · github.com · its alternatives →

11. 11N1
    NodeOS 1.0-RC1▲17

    2015 · node-os.com · its alternatives →

12. 12
    Noto▲286

    A simplified, modern writing app.

    2019 · noto.ink · its alternatives →

13. 13
    TinyOS – A minimalist RTOS for Cortex-M written in C▲102

    Contribute to cmc-labo/tinyos-rtos development by creating an account on GitHub.

    Apr 2026 · github.com · its alternatives →

14. 14
    Debian 13 "Trixie"▲145

    The rock-solid OS that powers the internet, now even better

    2025 · debian.org · its alternatives →

15. 15
    Sacred OS▲155

    Retro OS in your browser

    2024 · sacred.neocities.org · its alternatives →

16. 16
    GrapheneOS▲116

    Open source mobile OS focused on privacy and security.

    2019 · grapheneos.org · its alternatives →

17. 17NA
    Notkia – A Linux phone with LoRa+WiFi+BT connectivity▲38

    2022 · hackster.io · its alternatives →

18. 18AM
    A miniature Linux distro for non-rooted Android devices▲94

    2013 · kevinboone.net · its alternatives →

19. 19
    Notific▲189

    Whatsapp notifications for your crypto wallet

    2022 · its alternatives →

20. 20
    Zorin OS 12▲139

    Open source Linux-based OS that is fast, powerful and secure

    2017 · zorin.com · its alternatives →

21. 21
    Very basic Unix-like operating system built when I was younger▲150

    (Very) basic UNIX-like operating system built when I was younger - SamyPesse/devos

    2013 · github.com · its alternatives →

22. 22KA
    KnightOS – An open-source OS for calculators▲180

    2016 · knightos.org · its alternatives →

23. 23
    Programming Web Operating System 0xWebOS▲8

    0xWebOS openOS

    2025 · programwebos.netlify.app · its alternatives →

24. 24
    NodeOS▲5

    node-os is the first operating system powered by npm

    2016 · node-os.com · its alternatives →

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 →