Dev tools · alternatives · 2026

24 alternatives to System.css

A design system for building retro Apple UIs

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

1. 1
   98.css▲256

   A design system for building faithful recreations of old UIs

   2020 · jdan.github.io · its alternatives →

2. 2
   Cs16.css – CSS library based on Counter Strike 1.6 UI▲819

   CSS library based on Counter Strike 1.6 UI.

   2025 · cs16.samke.me · its alternatives →

3. 3
   XP.css – Windows XP CSS file and framework for building GUIs▲297

   A design system for building faithful recreations of old UIs.

   2020 · botoxparty.github.io · its alternatives →

4. 4LC
   Laptop.css▲92

   2019 · jjkaufman.github.io · its alternatives →

5. 5
   Water.css – A just-add-css collection of styles to make websites nicer▲501

   A drop-in collection of CSS styles to make simple websites just a little nicer - kognise/water.css

   2019 · github.com · its alternatives →

6. 6XA
   X86CSS – An x86 CPU emulator written in CSS▲275

   x86CSS is a working CSS-only x86 CPU/emulator/computer. No JavaScript required!

   Feb 2026 · lyra.horse · its alternatives →

7. 7
   Tailwind CSS▲420

   A utility-first CSS framework for rapid UI development

   2017 · tailwindcss.com · its alternatives →

8. 8BC
   Bolt.css – Another classless CSS library▲134

   Bolt.css is a classless css library

   2022 · boltcss.com · its alternatives →

9. 9
   awsm.css▲173

   Simple CSS library for semantic HTML markup

   2017 · github.com · its alternatives →

10. 10
    CSS-Mint▲118

    Lightweight and simple to use UI Kit.

    2016 · arunmichaeldsouza.github.io · its alternatives →

11. 11CC
    Chartss.css – accessible HTML/CSS charts with markdown support▲265

    2020 · rbitr.github.io · its alternatives →

12. 12
    Devices.css▲181

    iOS, Android and other devices made in pure CSS

    2014 · marvelapp.github.io · its alternatives →

13. 13
    CSS Reference for iPhone, iPad▲157

    A visual guide to CSS with illustrated + animated examples

    2017 · apps.apple.com · its alternatives →

14. 14
    Picnic.css, a lightweight Bootstrap alternative▲247

    I've tried to make it as light as possible. It's only tested with Firefox and Chrome, however I intend to test it in IE down to 9. What would you change? What would you add? Any feedback or pull request is greatly welcome! MIT Licensed

    2014 · picnicss.com · its alternatives →

15. 15
    Layer CSS▲152

    Lightweight CSS framework to build your own fluid layouts

    2015 · layers-css.vercel.app · its alternatives →

16. 16
    CSS Toolkit▲161

    Crazy interactive CSS animation builder (Mac)

    2014 · apps.apple.com · its alternatives →

17. 17
    CSS Blocks by Linkedin▲102

    Blazing fast CSS for your design systems and apps

    2018 · css-blocks.com · its alternatives →

18. 18
    MetalliCSS▲64

    Versatile metallic finish for your CSS

    2022 · metallicss.com · its alternatives →

19. 19
    Pattern.css▲197

    CSS library to fill empty background with beautiful patterns

    2020 · github.com · its alternatives →

20. 20
    Picnic CSS▲131

    A beautiful CSS library to kickstart your projects

    2016 · picnicss.com · its alternatives →

21. 21
    Skeleton 2.0▲127

    A dead simple, responsive CSS boilerplate.

    2014 · getskeleton.com · its alternatives →

22. 22
    rene.css▲113

    ai-ready css framework and design toolkit

    2025 · renecss.org · its alternatives →

23. 23
    React UIkit Components▲200

    Collection of React components using the UIkit CSS framework

    2016 · otissv.github.io · its alternatives →

24. 24
    Shorthand CSS▲169

    Feature rich CSS framework for the new decade

    2020 · shorthandcss.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 →