1.clap-rs / clap
A full featured, fast Command Line Argument Parser for Rust
+255 stars
from 16,559 · score 5.55
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Ranked by Attention Score: stars gained over the last 90 complete days
11 repositories by Attention Score · Aug 5, 2026 – Nov 2, 2026 (UTC)
2.remkop / picocli
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.
+60 stars
from 5,397 · score 4.11
3.Taywee / args
A header-only C++ argument parser library. Supposed to be flexible and powerful, and attempts to be compatible with the functionality of the Python standard argparse library (though not necessarily the API).
+19 stars
from 1,627 · score 3.00
4.adishavit / argh
Argh! A minimalist argument handler.
+8 stars
from 1,436 · score 2.20
5.bfgroup / Lyra
A simple to use, composable, command line parser for C++ 11 and beyond
+7 stars
from 598 · score 2.08
6.hedzr / cmdr
POSIX-compliant command-line UI (CLI) parser and Hierarchical-configuration operations
+2 stars
from 141 · score 1.10
7.jbock-java / jbock
Reflectionless command line parser
+2 stars
from 94 · score 1.10
8.mshenoda / argy
Argy: Command-line parsing library for modern C++ — simple, intuitive, and header-only with no dependencies.
+2 stars
from 36 · score 1.10
9.akamensky / argparse
Argparse for golang. Just because `flag` sucks
+1 stars
from 638 · score 0.69
10.mdub / clamp
a Ruby command-line application framework
+1 stars
from 447 · score 0.69
11.badaix / popl
Header-only C++ program options parser library
+1 stars
from 178 · score 0.69