栈查查 is a free Chrome add-on designed to analyze and display the technology stack used in GitHub repositories. It automatically scans various package management files in a project, identifying the frameworks, build tools, testing libraries, and state management tools utilized in the codebase. This tool enhances developers' understanding of dependencies within their projects and promotes effective technology stack management.

The add-on supports a wide range of tools and package managers, making it versatile for many programming languages and environments. It can analyze files from npm, Python, Go, Rust, Java, .NET, Swift, and CMake, among others. By intelligently categorizing dependencies, 栈查查 streamlines the process of assessing the technology used in development projects, aiding developers in making informed decisions regarding their tech stack.