A Cargo subcommand for the client-side Web

Apache License 2.0

cargo-web

cargo subcommand showing the assembly, LLVM-IR and MIR generated for Rust code 

cargo-show-asm

Picocli is a modern framework for building powerful, user-friendly, GraalVM-enabled command line apps with ease. It supports colors, autocompletion, subcommands, and more.  In 1 source file so apps can include as source & avoid adding a dependency. Written in Java, usable from Groovy, Kotlin, Scala, etc. 

picocli

Idiomatic Go input parsing with subcommands, positional values, and flags at any position. No required project or package layout and no external dependencies.

The Unlicense

flaggy

Flag is a simple but powerful command line option parsing library for Go support infinite level subcommand