Open source. Open possibilities.

nvm is a POSIX-compliant version manager for Node.js installed per-user and invoked per-shell. It supports bash, zsh, ksh, dash, and sh across Unix, macOS, and WSL.

A command-line tool to browse, stream, and download anime. It supports solo and synchronized watching with friends across multiple operating systems.

A pure-Go shell parser, formatter and interpreter supporting POSIX Shell, Bash, Zsh and mksh, best known for the shfmt formatting tool.

acme.sh is a pure Unix shell ACME protocol client that automates issuing, renewing and installing SSL/TLS certificates from CAs like ZeroSSL and Let's Encrypt, with no Python dependency and support for many DNS APIs and web servers.

Cobra is a Go library for building modern CLI applications with subcommands, POSIX-compliant flags, nested commands, automatic help and shell completion generation, and man page output. It powers tools like Kubernetes, Hugo, and GitHub CLI.