What are the best web apps for CSS?

People on Linkstore rate CSS Battle, Flexbox Froggy and Transitions highly. Every app on this list was opened and checked by a person before it went live.

Are there free apps for CSS?

Yes. CSS Battle, Flexbox Froggy, Transitions and Easings and 8 more are free to use or have a free plan. CSS Battle and Flexbox Froggy are completely free.

Do web apps for CSS need to be installed?

No. They all run in a web browser, so you can open one and start right away. Transitions, Neumorphism and Uiverse can also be installed to a home screen or dock if you like.

How is this list ordered?

By rating: a weighted average of the ratings people leave on Linkstore, so a few early five-star ratings can't outrank a large, steady score. Nobody can pay to move up.

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13 best web apps for CSS in 2026

The best web apps for CSS, ranked by what people rate them. All of them run in your browser. CSS Battle, Flexbox Froggy and Transitions lead the list. 12 of them are free or have a free plan.

13 apps · 12 free or with a free plan · Updated October 2026

13 apps for CSS

Best rated first. Paid placements never change this order.

1
CSS Battle
Recreate a target image using only CSS.
LearningNewFree
Open
2
Flexbox Froggy
Learn flexbox by placing frogs on lily pads.
LearningNewFree
Open
3
Transitions
Essential page and UI transitions you can paste into a project.
DesignNewFree
Open
4
Animations on the Web
A course on CSS and JS animation for the web.
LearningNewPaid
Open
5
Easings
Test easing curves on real UI, or make your own.
DesignNewFree
Open
6
Typescale
Build a type scale and export the CSS.
DesignNewFreemium
Open
7
Neumorphism
A CSS generator for neumorphic shadows and shapes.
DesignNewFree
Open
8
Uiverse
Community-made CSS and Tailwind elements you can copy.
DesignNewFree
Open
9
MDN Web Docs
The reference for HTML, CSS, JavaScript and web APIs.
Developer ToolsNewFree
Open
10
OKLCH Color Picker
Pick and convert colors in the OKLCH color space.
DesignNewFree
Open
11
Tailwind Play
An online playground for trying Tailwind CSS.
Developer ToolsNewFree
Open
12
Can I use
Check which browsers support a web feature.
Developer ToolsNewFree
Open
13
CodePen
Write HTML, CSS and JavaScript and see the result live.
Developer ToolsNewFreemium
Open