Alternatives

Products that do what CSS Units does

A complete interactive reference to every CSS unit

1. 1AV
   A visual guide to the most popular CSS properties▲1,117

   2016 · cssreference.io

2. 2UC
   USA.css – units set in inches, 1776 bytes▲457

   2020 · bennettfeely.com

3. 3CC
   Cs16.css – CSS library based on Counter Strike 1.6 UI▲819

   2025 · cs16.samke.me

4. 4
   Every Layout▲391

   Relearn CSS, by example

   2019

5. 5
   Complete Guide to CSS Flex and Grid▲113

   Become a Pro at building components with CSS Flexbox & Grid

   2022

6. 6CC
   Chartss.css – accessible HTML/CSS charts with markdown support▲265

   2020 · rbitr.github.io

7. 73B
   3D Book Image CSS Generator▲638

   2020 · 3d-book-css.netlify.app

8. 8
   CSS Reference for iPhone, iPad▲157

   A visual guide to CSS with illustrated + animated examples

   2017

9. 9OC
   One clean, developer-focused page for every Unicode symbol▲198

   I’m building a Unicode reference where each symbol has its own dev-friendly page with all relevant encodings. Example: [https://fontgenerator.design/symbol/almost-equal-to](https://fontgenerator.design/symbol/almost-equal-to) Includes Unicode, HTML, CSS, JS, UTF-8/16 bytes, URL encoding, and usage examples. The same structure is used across thousands of symbols (math, arrows, currency, tech/UI, punctuation). Built because existing references are fragmented. Feedback welcome.

   Dec 2025 · fontgenerator.design

10. 10
    UX Database▲377

    The biggest free curated product design resources & tools

    2020

11. 11
    Beautiful CSS Buttons by CSS Scan▲191

    Curated collection of 83 free beautiful buttons

    2021

12. 12
    98.css▲256

    A design system for building faithful recreations of old UIs

    2020

13. 13
    CSSeffectsSnippets.▲292

    A collection of CSS effects with a click to copy.

    2019

14. 14
    UX UI Doc Kit▲182

    Free kit to improve your UX/UI workflow in Sketch & Figma

    2020

15. 15IW
    I wrote a book about Debugging CSS▲137

    2020 · debuggingcss.com

16. 16
    Tailwind CSS Cheat Sheet▲247

    Every class name from Tailwind CSS on a single page

    2021

17. 17HC
    Hint.css v2.0 – Pure CSS tooltip library▲253

    2016 · kushagragour.in

18. 18
    Transforms in CSS▲117

    Free eBook for learning to code animations

    2016

19. 19CO
    Collection of CSS Creations▲165

    2012 · cssdeck.com

20. 20
    Webstudio Variables▲214

    Build and reuse expertly crafted Design Systems

    2024

21. 21AB
    A beginner’s guide to finding user needs▲182

    https://urbook.fordes.de/ …a free/libré book about UX research with qualitative methods on motivations, activities written for UX researchers, UX designers and product managers. I have been writing on this book since about 2010 and did a large rewrite during the first half of 2022. (I initally planned this with a bigger tech publisher). This is the link to the full book for online reading: https://jdittrich.github.io/userNeedResearchBook/ (it’s one long page, so it might take a bit to load)

    2022

22. 22BC
    Bolt.css – Another classless CSS library▲134

    2022 · boltcss.com

23. 23LA
    Littlebox, a pure CSS icon library – worth continuing?▲192

    2015 · littlebox.cabmaddux.com

24. 24
    CSS.GUI▲201

    Open source visual editors for everything in the CSS spec

    2022

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