The LaTeX2e kernel
The expl3 (LaTeX3) Development Repository
The static code analysis tool you need for your HTML
A tool that automatically formats Python code to conform to the PEP 8
Reformats Java source code to comply with Google Java Style
Import YAML/JSON-formatted configuration files into Keycloak
Formatting library as an alternative to C stdio and C++ iostreams
The next generation Javascript WYSIWYG HTML Editor
Turn any technical book PDF into a Claude Code skill
Home of the MDN live code editor interactive examples
Safely and predictably create, change, and improve infrastructure
The fastest JSON schema Validator
JSON that's part of C++
Emacs client/library for the language server protocol
the MiKTeX source code
A static analyzer for Java, C, C++, and Objective-C
arXiv LaTeX Cleaner: Easily clean the LaTeX code of your paper
HTML, CSS and JS framework for developing responsive websites and apps
Convert curl commands to Go code in your browser
webrpc is a schema-driven approach to writing backend services
From community websites to web applications, this CSS framework
An extensible Markdown Editor, Viewer and Weblog Publisher for Windows
Dynamic, functional language designed for building scalable apps
WebDriver for Firefox
Web Framework built on top of Qt, using the approach of Catalyst