Flag

CoostC++

A lightweight, cross-platform C++11 base library providing high-performance utilities like logging, coroutines, JSON, and networking.

Swift Argument ParserSwift

A Swift library for building command-line tools with type-safe argument parsing and automatic help generation.

CountryPickerViewSwift

A customizable iOS view for selecting countries with flags, codes, and phone numbers.

zerocfgGo

A Go configuration library with a flag-like API that supports YAML, environment variables, and CLI arguments with zero boilerplate.

sflagsGo

A Go library that generates command-line flags by parsing struct tags, supporting multiple flag libraries.

go-getoptionsGo

Fully featured Go (golang) command line option parser with built-in auto-completion support.

cmdGo

A minimalistic Go library that extends the standard flag package with subcommands, bash completion, and explicit positional arguments.