reference

Reference is a website that collects developer cheat sheets in one place. A cheat sheet is a single-page summary of the most commonly used commands, syntax, or shortcuts for a programming language or tool, intended for quick lookups rather than learning from scratch. The live site is at cheatsheets.zip.

The collection covers a wide range of topics. On the programming side, there are sheets for languages including Python, JavaScript, Java, Go, Rust, C, C++, PHP, Bash, and others. There are also sheets for web technologies like HTML, CSS, and jQuery, configuration file formats like YAML, TOML, and INI, and developer tools like Docker, Vim, Git, and regular expressions.

Beyond programming languages and tools, the collection includes cheat sheets for areas like Linux commands, databases (MySQL, PostgreSQL, Redis, MongoDB), keyboard shortcuts for editors like VS Code and Emacs, and network-related topics. There is also a section covering Chinese-language resources, and the project has a sibling version in Chinese.

The project is community-maintained. Anyone can submit a new cheat sheet or improve an existing one by contributing to the repository. The cheat sheets are built using EJS, a templating language, and the result is a static website. The README notes that the original domain quickref.me was acquired by another company; the current maintained domain is cheatsheets.zip.

This is not software you install and run. It is a website with source files that can be self-hosted or contributed to. The README is focused on listing what cheat sheets are available and explaining how to contribute new ones. The full README is longer than what was shown.