chalk-template is a Node.js library for styling terminal output using tagged template literals, built on top of the Chalk library. It allows developers to apply ANSI color and styling codes to command-line text by embedding style directives within template strings, supporting features like RGB colors, hex codes, and chained style methods. The project is maintained by Sindre Sorhus and Josh Junon, and provides both standard output and standard error variants for printing styled strings to the terminal.