CLIUtils/CLI11

Health v2 · maintenance only

Flags: no_license

Adoption not part of the score

4424 stars · 463 forks observed · 2026-08-28

What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-29, confidence not recorded

CLI11 is a header-only C++11 command line argument parser with a rich feature set including subcommands, validators, and configuration file support. It has no dependencies beyond C++11 and ships as a single-file header for easy inclusion.

Use cases

• parse command line arguments in a C++ program
• add subcommands to a C++ CLI tool
• generate automatic --help output for a C++ app
• load CLI options from a configuration file
• validate command line option values in C++
• build a multi-command CLI tool in C++ without dependencies

When to choose

• you need a modern, dependency-free C++11+ argument parser
• you want header-only, single-file integration
• you need subcommands, validators, or config file support
• you want cross-platform support with high test coverage

When to avoid

• your project targets pre-C++11 compilers
• you need GUI or interactive TUI features rather than argument parsing
• you prefer a parser with code generation or a different API style

Facets

library · maturity stable

cli parser developer-tools developer-tools cross-platform cpp cross-platform windows header-only command-line-parser cpp11 no-dependencies subcommands config-file command-line linux macos

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