HTML GitHub Repositories (2026) · Open Source Tools

OpenUI5 lets you build enterprise-ready web applications, responsive to all devices, running on almost any browser of your choice.

Ruby on Rails

An open-source engine that turns continuous content streams into search and monitoring. Durable ingestion, hybrid search, alerts, and plugins for formats, models and business rules.

Beautiful and accessible math in all browsers

The awesome document factory

tsParticles - Easily create highly customizable JavaScript particles effects, confetti explosions and fireworks animations and use them as animated backgrounds for your website. Ready to use components available for React.js, Vue.js (2.x and 3.x), Angular, Svelte, jQuery, Preact, Inferno, Solid, Riot and Web Components.

Win12 Online

emmet for vim: http://emmet.io/

SwiftSoup: Pure Swift HTML Parser, with best of DOM, CSS, and jquery (Supports Linux, iOS, Mac, tvOS, watchOS)

PHP library generating PDF files from UTF-8 encoded HTML

The essential toolkit for web-developers

Build, bundle & ship your Rust WASM application to the web.

A components library built with Tailwind CSS that works with any web stack.

Go minifiers for web formats

Web Components for building declarative, graphical web apps

boxes and glue made easy - a PDF rendering library for Go using boxes and glue

Prettier is an opinionated code formatter.

HTML parsing/serialization toolset for Node.js. WHATWG HTML Living Standard (aka HTML5)-compliant.

Computer vision assisted tool to extract numerical data from plot images.

LayaAir is a fully platform rendering engine with rich 2D/3D rendering capabilities and a mature integrated development platform