c2rust https://github.com/immunant/c2rust :

> C2Rust helps you migrate C99-compliant code to Rust. The translator (or transpiler), c2rust transpile, produces unsafe Rust code that closely mirrors the input C code. The primary goal of the translator is to preserve functionality; test suites should continue to pass after translation.

crust https://github.com/NishanthSpShetty/crust :

> C/C++ to Rust transpiler

"CRustS: A Transpiler from Unsafe C to Safer Rust" (2022) https://scholar.google.com/scholar?q=related:WIDYx_PvgNoJ:sc...

rust-bindgen https://github.com/rust-lang/rust-bindgen/ :

Automatically generates Rust FFI bindings to C (and some C++) libraries

nushell/nushell looks like it has cool features and is written in rust.

awesome-rust > Applications > System Tools https://github.com/rust-unofficial/awesome-rust#system-tools

awesome-rust > Libraries > Command-line https://github.com/rust-unofficial/awesome-rust#command-line

rust-shell-script/rust_cmd_lib https://github.com/rust-shell-script/rust_cmd_lib :

> Common rust command-line macros and utilities, to write shell-script like tasks in a clean, natural and rusty way