Dev tools · alternatives · 2026

24 alternatives to Neptune CSS

A free and open source CSS framework

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Neptune CSS launched in 2023; newer entries below may have overtaken it.

1. 1
   Tailwind CSS▲420

   A utility-first CSS framework for rapid UI development

   2017 · tailwindcss.com · its alternatives →

2. 2
   Shorthand CSS▲169

   Feature rich CSS framework for the new decade

   2020 · shorthandcss.com · its alternatives →

3. 3
   Tailwind CSS v2.0▲385

   Rapidly build modern websites without ever leaving your HTML

   2020 · tailwindcss.com · its alternatives →

4. 4
   Turtle CSS▲4

   Open Source Easy to Use , Minimal but Powerful CSS Framework

   2018 · 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. 6
   sea.css▲5

   sea.css is a simple and easy to use css framework.

   2020 · github.com · its alternatives →

7. 7
   Tailwind CSS v1.0▲279

   A utility-first CSS framework for building custom designs.

   2019 · tailwindcss.com · its alternatives →

8. 8
   Renaissance▲141

   The freshest CSS framework

   2018 · its alternatives →

9. 9
   EnjoyCSS▲138

   CSS generator for rich graphical styles without coding

   2014 · enjoycss.com · its alternatives →

10. 10AM
    A maximalist CSS framework for full stack developers▲52

    2020 · ridgecss.com · its alternatives →

11. 11
    Spectre.css▲162

    A lightweight, responsive and modern CSS framework

    2016 · picturepan2.github.io · its alternatives →

12. 12
    Tailframes▲103

    Open Source components library for React & Tailwind CSS

    2024 · tailframes.com · its alternatives →

13. 13
    Layer CSS▲152

    Lightweight CSS framework to build your own fluid layouts

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

14. 14
    Open-Source Page Block Builder with Remix and Tailwind CSS▲155

    2022 · remix-page-blocks.vercel.app · its alternatives →

15. 15
    Picnic CSS▲131

    A beautiful CSS library to kickstart your projects

    2016 · picnicss.com · its alternatives →

16. 16
    Puppertino▲143

    A CSS framework based on Apple's design and human guidelines

    2020 · codedgar.github.io · its alternatives →

17. 17
    Open Source TailwindCSS UI Components▲148

    Free Tailwind html UI Components - built to create landing pages and websites. Easyfrontend UI components are free and open-source. Copy paste the components to update your existing site or create a new site from it.

    2024 · github.com · its alternatives →

18. 18
    MetalliCSS▲64

    Versatile metallic finish for your CSS

    2022 · metallicss.com · its alternatives →

19. 19
    hack.css▲174

    The CSS framework for hackers

    2016 · hackcss.com · its alternatives →

20. 20
    Skeleton 2.0▲127

    A dead simple, responsive CSS boilerplate.

    2014 · getskeleton.com · its alternatives →

21. 21
    System.css▲116

    A design system for building retro Apple UIs

    2022 · github.com · its alternatives →

22. 22AS
    A simple lightweight CSS grid, not a bloated framework▲134

    2012 · thisisdallas.github.com · its alternatives →

23. 23
    Bamboo CSS▲101

    A classless CSS utility for your HTML

    2021 · github.com · its alternatives →

24. 24VM
    Versatile Metallic Finish for CSS▲112

    Adaptive metallic texture for the web

    2022 · metallicss.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 →