⚡ CSS Tools

CSS tools are software applications and libraries for processing CSS (Cascading Style Sheets), including static code analysis, transformation, cleanup, and more.

According to our research, CSS tools are used on 0.7% of all websites.
65.5% of these sites use only one CSS tool, 19.3% use two, and 15.2% use three or more at the same time.

Statistics based on 3.3M+ analyzed websites. About this data

⭐ Most Popular in 2026

The following chart shows the leading CSS tools in 2026, based on market share.

The most popular is RTLCSS with an impressive share of 57.5%, followed by PostCSS with 54.1% and Autoprefixer with 33.2%.

🚀 Country Highlights

Here is a list of tools that are especially popular in certain countries.
Differences between global and country rankings are shown in parentheses.

✨ Best CSS Tools

Below is a more detailed list of 8 CSS tools we track, ranked by their market share.

RankNameMarket share
1
RTLCSS
Jordan

A framework for converting Left-To-Right CSS to Right-To-Left.

FreeOpen source
2
PostCSS

A tool for transforming CSS styles with JS plugins.

FreeOpen source
3
Autoprefixer

A PostCSS plugin to parse CSS and add vendor prefixes to CSS rules using values from Can I Use.

FreeOpen source
4
Stylelint

A linter for CSS and SCSS stylesheets that helps to avoid errors and enforce conventions.

FreeOpen source
5
Custom Shape Dividers

An online tool to generate fully responsive CSS dividers.
6
PurgeCSS

A tool to analyze and remove unused CSS.

FreeOpen source
7
Animista

A CSS animation library of ready-made CSS animations.
8
CSSLint

An open-source code quality tool for static analysis of CSS code.

👉 See Also

🗃️ About This Data