Dev tools · alternatives · 2026

24 alternatives to Outline CSS Framework

A lean, mean responsive framework

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Outline CSS Framework launched in 2016; newer entries below may have overtaken it.

1. 1
   Wing▲247

   A dead-simple, responsive, CSS framework

   2016 · its alternatives →

2. 2
   hack.css▲174

   The CSS framework for hackers

   2016 · hackcss.com · its alternatives →

3. 3
   Slides Framework▲185

   Animated web presentations and landing pages in HTML/CSS 😻

   2017 · designmodo.com · its alternatives →

4. 4
   A Single Div▲177

   A CSS drawing project

   2016 · a.singlediv.com · its alternatives →

5. 5
   Spectre.css▲162

   A lightweight, responsive and modern CSS framework

   2016 · picturepan2.github.io · its alternatives →

6. 6
   Skeleton 2.0▲127

   A dead simple, responsive CSS boilerplate.

   2014 · getskeleton.com · its alternatives →

7. 7
   Layer CSS▲152

   Lightweight CSS framework to build your own fluid layouts

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

8. 8
   Picnic CSS▲95

   a lightweight Bootstrap alternative

   2014 · picnicss.com · its alternatives →

9. 9
   Picnic CSS▲131

   A beautiful CSS library to kickstart your projects

   2016 · picnicss.com · its alternatives →

10. 10
    AIUX▲107

    A systematic UX design course for the responsive web

    2015 · learnaiux.com · its alternatives →

11. 11
    Turret▲115

    A Responsive Front-end Framework for accessible websites

    2015 · bigfishtv.github.io · its alternatives →

12. 12
    CSS Triggers▲80

    A game of layout, paint and composite

    2014 · csstriggers.com · its alternatives →

13. 13
    Stylish▲109

    Restyle the web with custom CSS

    2015 · chromewebstore.google.com · its alternatives →

14. 14
    Unify CSS Framework▲69

    Create a website, no code or design experience is needed

    2023 · its alternatives →

15. 15
    Pure▲164

    Set of small, responsive CSS modules

    2014 · pure-css.github.io · its alternatives →

16. 16
    Foundation 5▲87

    The most advanced responsive front-end framework.

    2014 · get.foundation · its alternatives →

17. 17
    Less 2.0▲96

    CSS pre-processor makes CSS more maintainable & extendable

    2014 · lesscss.org · its alternatives →

18. 18
    PaperCSS▲13

    The less formal CSS framework

    2017 · getpapercss.com · its alternatives →

19. 19
    ctr▲5

    The CSS Framework

    2017 · ctr-lang.com · its alternatives →

20. 20
    EnjoyCSS▲138

    CSS generator for rich graphical styles without coding

    2014 · enjoycss.com · its alternatives →

21. 21
    Cutestrap▲113

    A sassy, opinionated CSS Framework.

    2016 · cutestrap.com · its alternatives →

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

    2012 · thisisdallas.github.com · its alternatives →

23. 23AS
    A small (less than 2 kb) CSS framework▲79

    A beautiful CSS framework in under 2 KiB

    2013 · andhart.github.io · its alternatives →

24. 24
    StyleKit▲120

    UI framework for OSX

    2016 · github.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 →