Top HTML GitHub Repositories & Tools (2026)

Write desktop and web apps in pure Python

⚙️ The static code analysis tool you need for your HTML

Juice inlines CSS stylesheets into your HTML source.

Render OG images and paged PDFs from JSX, HTML, and CSS. No headless browser. Runs on Node.js, Cloudflare Workers, browsers, and Rust.

:sparkles: Mojolicious - Perl real-time web framework

Ruby HTML and CSS sanitizer.

The headless Chrome/Chromium driver on top of Puppeteer. Take screenshots, generate PDFs, extract text and HTML with a production-ready API.

Free, open source mental health communication web app to share experiences with loved ones

Database Reporting Tool and Tasks (.Net)

PHP Standard Library

Secure and speedy templates for Java and Kotlin.

A jq-like Markdown query language for command-line processing

Converts CSS styles into inline style attributes in your HTML code.

Any file → clean Markdown for AI agents: PDF, Word, PowerPoint, Excel, EPUB, HTML and web pages, images (OCR), audio and video (metadata, subtitles, transcripts). A fast Rust MCP server and CLI that runs on your machine. No API key.

HTML reports for Cucumber

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

An ESLint plugin to extract and lint scripts from HTML files.

Grav Admin Plugin

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.

DOMjudge programming contest jury system