Thomas Schweitzer's powerful code indenter front-end, UniversalIndentGUI.

Browser-based multi-language code formatter for HTML, CSS, JavaScript, PHP and JSON with auto-detection, syntax highlighting and zero build setup.

PROTEL is the PRocedure Oriented Type Enforcing Language. It was orginally used by Bell-Northern Research / Nortel Networks on the DMS product line of switching systems. PROTEL 2026 is a new open-source version of PROTEL that runs on modern MacOS and UNIX / Linux systems, and fully integrates with C/C++, Swift, Rust, Python, and Java.

Code Beautifier is a javascript library to beautify PHP code, but it also works in other languages.

HTML Beautify is a javascript library to beautify HTML code.

Code Beautifier for HTML, CSS and JavaScript 🌐 Live Preview at https://www.devilhunter.net/p/code-beautifier.html

Amazing code is a tool to color and style your code so you can use it in your blog/email/homework

Prismify is an AI-powered code beautification and refactoring tool that goes beyond standard formatting. It uses local LLMs (Ollama) to intelligently rename variables, detect magic numbers, simplify conditionals, and generate explanatory comments while enforcing style guides like Airbnb, Google, or PEP 8.

Beautify and format your CSS code instantly with our free online CSS Formatter. Improve readability, clean up messy styles, and make your code easy to manage.

PHP Code Lib is a comprehensive library for analyzing, validating, executing, editing, beautifying, and obfuscating PHP code. It is designed for advanced code introspection, automation, refactoring, security hardening, and developer tooling. It allows you to safely inspect, manipulate, parse and execute PHP source code at a structural level.

A lightweight, privacy-focused web application for adding and removing line numbers from code snippets with real-time processing and zero server dependencies.

Screenshot capture, annotation & code beautification for developers