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Top 23 JavaScript PostCSS Projects
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Project mention: Standard CSS has become beautiful, Tailwind may no longer be necessary | dev.to | 2026-06-23
What was born to solve this problem was Daisy UI.
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Puter.js
Puter.js - The Backend for AI-Generated Apps. One-shot full-stack apps with your existing AI coding tool. Puter.js gives you Auth, Storage, DB, AI & more, with up to 90% fewer AI tokens than other backend platforms.
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To keep the comparison fair, this article picks the vanilla runtime, @emotion/css — the fairest opponent, because it is already framework-agnostic: its css() is a plain function with no React and no render. The catch is how it names a style. On every call, css() runs the whole pipeline in @emotion/serialize, invoked from the core css() in @emotion/css — it evaluates the interpolations, assembles the CSS string and hashes it, returning -:
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Meet my new codemod, ignore-lint-errors. It helps us ignore lint errors from eslint, stylelint, and typescript (glint for Ember projects).
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AST Explorer exists, and it's great. I use it regularly. It's the reference tool for exploring ASTs. I wanted to build something similar as part of Kitmul; my own version of an AST visualizer with parser selection, interactive tree view, and support for the parsers I use daily.
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AppSignal
Monitoring that respects your time & budget. APM, error tracking, and dashboards for modern web apps. Ten-minute setup, transparent flat pricing, and support from engineers who actually use the product.
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Aphrodite
Framework-agnostic CSS-in-JS with support for server-side rendering, browser prefixing, and minimum CSS generation
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vue-virtual-scroll-list
⚡️A vue component support big amount data list with high render performance and efficient.
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lost
LostGrid is a powerful grid system built in PostCSS that works with any preprocessor and even vanilla CSS.
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postcss-px-to-viewport
A plugin for PostCSS that generates viewport units (vw, vh, vmin, vmax) from pixel units. The best choice to create a scalable interface on different displays by one design size.
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postcss-easing-gradients
PostCSS plugin to create smooth linear-gradients that approximate easing functions.
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concise.css
A CSS framework that's lightweight and easy-to-use. Give up the bloat. Stop tripping over your classes. Be Concise.
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SaaSHub
SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives
NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
JavaScript PostCSS discussion
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How to Optimize CSS for Faster Page Load Speed
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Website Performance Optimization: Proven Techniques for Faster Websites
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🚀 Stop Slowing Down Your Website! Find & Remove Unused JavaScript Now
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Desktop apps for Windows XP in 2025
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A note from our sponsor - Puter.js
developer.puter.com | 9 Aug 2026
Index
What are some of the best open-source PostCSS projects in JavaScript? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | daisyui | 41,978 |
| 2 | emotion | 18,015 |
| 3 | stylelint | 11,509 |
| 4 | uncss | 9,410 |
| 5 | styled-jsx | 7,779 |
| 6 | JSS | 7,061 |
| 7 | astexplorer | 6,544 |
| 8 | Aphrodite | 5,341 |
| 9 | React CSS Modules | 5,170 |
| 10 | vue-virtual-scroll-list | 4,509 |
| 11 | lost | 4,458 |
| 12 | glamor | 3,667 |
| 13 | postcss-px-to-viewport | 3,159 |
| 14 | Fela | 2,285 |
| 15 | Symfony Encore | 2,221 |
| 16 | postcss-pxtorem | 2,162 |
| 17 | ReactCSS | 1,583 |
| 18 | Atomizer | 1,548 |
| 19 | postcss-import | 1,409 |
| 20 | CSSX | 1,006 |
| 21 | postcss-easing-gradients | 999 |
| 22 | concise.css | 931 |
| 23 | postcss-cli | 855 |
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