Top CSS GitHub Repositories & Tools (2026)

Contextual output encoding for Java 8+: HTML, JavaScript, CSS, XML and URI components. Zero-dependency core with optional JSP, Jakarta and ESAPI adapters.

Machine-readable references of terms defined in web browser specifications

This is a responsive website designed to house and promote the progress of RPCS3, an open-source PlayStation 3 emulator and debugger written in C++. This repository is regularly updated.

Gorgeous shadcn inspired UI library for laravel blade using Tailwind and AlpineJS

Your web skills, now in Unity.

A modern, open-source Full Calendar alternative for React. Month, week, day, and year views with drag-and-drop, horizontal and vertical resource views, and RFC 5545 recurring events — all MIT licensed.

This website uses Browserslist and Can I Use to display the compatible browsers for a browsers query.

Open-source, self-hosted photo and video galleries for photographers and events, with client proofing, password protection, guest uploads, custom branding and Docker deployment.

Competitive Splatoon Platform

Official Autoptimize repo on Github

A modern CSS selector implementation for BeautifulSoup

⏰ The open-source time tracking app for individuals.

Sass Compiler Library for .NET Core 3.1/5.x/6.x/7.x without node, using dart-sass as a compiler

Citizen Intelligence Agency. Open-source intelligence platform analyzing Swedish political activities using AI and data visualization. Tracks politicians, government institutions, and parliamentary data, offering detailed insights, performance metrics, and advanced analytics.

A powerful and elegant Vue 3 component system with headless primitives and ready-to-use styled wrappers.

slideshow gems - write your slides / talks / presentations in plain text with markdown formatting conventions

NukeViet CMS is multi Content Management System. NukeViet CMS is the 1st open source content management system in Vietnam. NukeViet was awarded the Vietnam Talent 2011, the Ministry of Education and Training Vietnam officially encouraged to use.

Create React App Vite ⚛️

Reviactyl is a modern and open-source game server management panel built using Laravel, React, FilamentPHP, Vite, and Go. It focuses on security and performance by running every game server inside isolated Docker containers while providing users with a clean and intuitive interface.

The Moox Project - Packages for Filament and Laravel