In this talk, I will introduce Comonicon. Comonicon is a CLI generator designed for Julia, unlike other CLI generators such as Fire, ArgParse, and so on, Comonicon does not only parse command-line arguments but also provide a full solution for building CLI application (via PackageCompiler), packing tarballs, generating shell auto-completion, CLI application installation, mitigating CLI latencies. I'll also talk about ideas arise from development about the future official Julia application.