GitHub user retlehs released quien, a command‑line WHOIS alternative that packs an interactive TUI and JSON output. Installable via a Homebrew tap or a single `go install` command, the tool handles domain and IP queries in one place. Tabbed views surface WHOIS data, DNS records, mail exchangers, SSL/TLS details, HTTP headers and detected tech stacks.

Under the hood, quien prefers RDAP lookups and falls back to traditional WHOIS when needed, ensuring coverage across most top‑level domains. It automatically follows IANA referrals to discover the correct WHOIS server, then applies exponential backoff retries on failures. Extra modules parse HTML to list WordPress plugins, JavaScript frameworks and external services, turning raw pages into structured inventory.

The project ships with JSON subcommands—dns, mail, tls, http, stack and all—making it script‑friendly for CI pipelines or security audits. Users can alias quien as their default WHOIS client, and the tool even registers as an agent skill via `npx skills`. Its all‑in‑one design trims the need for multiple utilities during reconnaissance.

Because it consolidates network intelligence into a single executable, quien appeals to DevOps engineers who routinely probe infrastructure. Its reliance on open standards like RDAP keeps it future‑proof, while the TUI lowers the barrier for interactive exploration. The open‑source repo on GitHub already shows community forks, hinting at early adoption.