The LaTeX2e kernel
The static code analysis tool you need for your HTML
Reformats Java source code to comply with Google Java Style
A language for writing HTML user interfaces in Go
A tool that automatically formats Python code to conform to the PEP 8
The next generation Javascript WYSIWYG HTML Editor
The expl3 (LaTeX3) Development Repository
JSON that's part of C++
Home of the MDN live code editor interactive examples
the MiKTeX source code
Write email in Markdown and render them before sending
The fastest JSON schema Validator
Formatting library as an alternative to C stdio and C++ iostreams
Emacs client/library for the language server protocol
A static analyzer for Java, C, C++, and Objective-C
arXiv LaTeX Cleaner: Easily clean the LaTeX code of your paper
A static analysis tool for shell scripts
WebDriver for Firefox
Ruby programming language
Documentation tool for ObjectPascal (Free Pascal, Lazarus, Delphi)
webrpc is a schema-driven approach to writing backend services
HTML, CSS and JS framework for developing responsive websites and apps
Tom Preston-Werner's obvious, minimal language
Web Framework built on top of Qt, using the approach of Catalyst
Skin changer for League of Legends (LOL)