Welcoming Repositories Index CSS Ecosystem
Top Welcoming Open-Source CSS Repositories
Top welcoming CSS repositories. Scored by real 90-day external PR merge rates, maintainer review turnaround speed, and first-time contributor success.
Updated daily • Sun, 30 Aug 2026 UTC
Tracked Repos
1,535
>100 stars verified
Avg Merge Rate
77%
90-day external PRs
Open GFIs
663
Beginner friendly issues
Welcoming Tier
10
S & A Tier maintainers
Ranked CSS Repositories
Showing top 50 of 1,535 ranked repositories
| Rank | Repository | Tier | Score | Merge Rate | Good First Issues |
|---|---|---|---|---|---|
| #1 | Change your GNOME Shell and GTK accent colors dynamically based on your wallpaper. | S•Elite | 80.2 | 100.0% | - |
| #2 | Ruby on Rails app that powers crimethinc.com | B•Solid | 74.1 | 96.0% | - |
| #3 | A responsive, good looking with modern design documentation theme for Sphinx, with great supports for many sphinx extensions. | B•Solid | 71.3 | 92.3% | - |
| #4 | Documentation for Plausible Analytics | B•Solid | 70.2 | 100.0% | - |
| #5 | Fork, Commit, Merge. A project designed to help you familiarize yourself with the open source contribution workflow on GitHub! | A•Welcoming | 69.4 | 92.5% | - |
| #6 | MacOS Big Sur like theme for Firefox on MacOS & Windows. Make your Firefox look like Safari. | A•Welcoming | 68.6 | 95.1% | - |
| #7 | Support for Reviewable | B•Solid | 68.0 | 100.0% | - |
| #8 | Apache Dubbo documents | A•Welcoming | 66.9 | 91.7% | - |
| #9 | Supercharge your Web Platform knowledge | B•Solid | 66.8 | 100.0% | - |
| #10 | Documentation that also shines | B•Solid | 66.2 | 90.0% | - |
| #11 | One-page gallery design with a fully functional lightbox, designed by HTML5 UP | B•Solid | 66.0 | 100.0% | - |
| #12 | Template project for creating an InfoQ Mini-Book with Asciidoctor | A•Welcoming | 65.8 | 73.2% | - |
| #13 | Site for the open source, community-driven group of dev and organizations working toward an interoperable, decentralized identity ecosystem | B•Solid | 64.6 | 85.7% | - |
| #14 | Welcome to the page where you will find each trick/technique/whatever I have learnt in CTFs, real life apps, and reading researches and news. | B•Solid | 64.1 | 77.0% | - |
| #15 | Animation-first CSS framework with reusable UI components, modern effects, and zero dependencies. Lightweight, beginner-friendly, and open-source. | A•Welcoming | 63.2 | 13.9% | 661 |
| #16 | B•Solid | 62.6 | 94.7% | - | |
| #17 | Julia Project website | A•Welcoming | 62.5 | 88.9% | - |
| #18 | Test drive programming fonts online: the definitive list of fonts for code. | B•Solid | 62.2 | 100.0% | - |
| #19 | hedyorg/hedy1,652 Hedy is a gradual programming language to teach children programming. Gradual languages use different language levels, where each level adds new concepts and syntactic complexity. At the end of the Hedy level sequence, kids master a subset of syntactically valid Python. | A•Welcoming | 60.6 | 80.6% | - |
| #20 | t2linux/wiki294 Repository for the t2linux.org wiki | A•Welcoming | 59.0 | 53.3% | - |
| #21 | The final form, the true evolution of the chromic theme saga! | B•Solid | 58.8 | 90.0% | - |
| #22 | Arc which receives non-chromium updates every 1-2 weeks! (iykyk) | B•Solid | 58.7 | 100.0% | - |
| #23 | dginev/ar5iv872 A web service offering HTML5 articles from arXiv.org as converted with latexml | B•Solid | 58.2 | 83.3% | - |
| #24 | MacOS Tahoe Liquid Glass Theme for KDE Plasma 6.6/6.7+ | B•Solid | 58.2 | 65.0% | - |
| #25 | 🌱 A Hugo theme named Dream. | B•Solid | 57.4 | 100.0% | - |
| #26 | LemmyNet/lemmy-ui1,007 The official web app for lemmy. | B•Solid | 57.0 | 83.3% | - |
| #27 | PostCSS Tools and Plugins | B•Solid | 56.9 | 100.0% | - |
| #28 | B•Solid | 56.1 | 0.0% | - | |
| #29 | Projeto do Site https://OsProgramadores.com | B•Solid | 56.1 | 100.0% | - |
| #30 | A blue theme for Obsidian. | B•Solid | 55.6 | 100.0% | - |
| #31 | The new repo containing both the notes & website of the WWDCNotes.com community project. | B•Solid | 55.5 | 77.8% | - |
| #32 | OUDS Web is an accessible, ergonomic and Orange branded framework based on Orange Unified Design System and Bootstrap | A•Welcoming | 55.4 | 64.3% | - |
| #33 | A series of plugins and themes for BetterDiscord. | B•Solid | 53.8 | 53.3% | - |
| #34 | 编程笔记、 AI 学习、观影指南、读书笔记、生活感悟、游戏记录 | B•Solid | 49.9 | 100.0% | - |
| #35 | ryanoasis/nerd-fonts64,464 Iconic font aggregator, collection, & patcher. 3,600+ icons, 50+ patched fonts: Hack, Source Code Pro, more. Glyph collections: Font Awesome, Material Design Icons, Octicons, & more | B•Solid | 49.7 | 100.0% | - |
| #36 | a dark, customizable discord theme. | B•Solid | 49.6 | 66.7% | - |
| #37 | A color palette for Deep contemplation and work | B•Solid | 49.4 | 100.0% | - |
| #38 | SonarQube extension for Visual Studio Code providing code quality and security feedback directly in the editor | B•Solid | 48.4 | 70.0% | - |
| #39 | Welcome to MediaSavvy, a trusted source for carefully curated piracy and other informative guides. I'm dedicated to providing top-tier resources that I personally use, recommend, and deem reliable, safe, high quality, trustwothy, easy to follow and practical for everyone. | B•Solid | 48.4 | 100.0% | - |
| #40 | cssnano/cssnano4,975 A modular CSS minifier, built on top of the PostCSS ecosystem. | B•Solid | 47.3 | 11.1% | - |
| #41 | rust-lang/nomicon2,309 The Dark Arts of Advanced and Unsafe Rust Programming | B•Solid | 47.1 | 100.0% | - |
| #42 | Bitcoin Cash - Peer-to-Peer Electronic Cash | B•Solid | 46.5 | 66.7% | - |
| #43 | Recipes encapsulate your favourite apps into Ferdium for unified notifications handling and more | B•Solid | 46.2 | 56.3% | - |
| #44 | Multiple companies go above and beyond for Hacktoberfest, and this repo tries to list them all. | B•Solid | 45.6 | 100.0% | - |
| #45 | B•Solid | 45.6 | 0.0% | 2 | |
| #46 | A cheatsheet to learn approachable Swift concurrency | B•Solid | 45.6 | 83.3% | - |
| #47 | A sleek, customizable Discord theme. | B•Solid | 45.2 | 0.0% | - |
| #48 | Website for Typora themes | B•Solid | 44.5 | 64.7% | - |
| #49 | Quarkus sample application - Super Heroes | B•Solid | 44.1 | 25.0% | - |
| #50 | 🌵 A collection of 16 desert-inspired high contrast Neovim colorschemes. Let there be light in the desert and dark in the oasis. | B•Solid | 44.0 | 50.0% | - |
How to Get Your CSS PR Merged
1
Check C-Rank™ First: Pick projects with S or A tiers to avoid maintainer ghosts and slow review cycles.
2
Run Local Verification: Ensure test suites and formatting linters pass before opening a pull request.
3
Submit in Maintainer Windows: Check the repository report card to submit when maintainers are most active.
Get this week's top welcoming repos + fresh Good First Issues for CSS
Free weekly email, scoped to CSS. No account needed - confirm once and unsubscribe anytime.
Frequently Asked Questions: CSS Open Source
What is the most welcoming CSS open-source repository?
The highest-ranked CSS repository on GetMerged is currently Fabito02/ChromaLeon, with a C-Rank score of 80.2/100 and a 100.0% PR merge rate.
How can I find good first issues in CSS?
You can browse verified beginner-friendly issues in CSS by visiting our curated Good First Issues directory at getmerged.abhishekco.de/good-first-issue/css.
What makes a CSS repository ‘Super Welcoming’ on GetMerged?
A ‘Super Welcoming’ (S-Tier) CSS repository demonstrates an external PR merge rate above 80%, a median first response time within 24 to 48 hours, active review feedback, and clear onboarding documentation.