namebox.dev is a free, AI-powered domain name generator built for developers. You describe your project, the model produces 12 name candidates, and each one is verified against the registry in real time via RDAP (RFC 7483). No sign-up, no upsell, no "premium" tier.
Why namebox.dev exists
Naming a project is the first permanent decision a founder makes, and most of the tools that try to help with it fall into the same trap: they hand you a list of words, almost all parked or unavailable, and try to sell you the ones that happen to be free. That is not a generator — it is a registration lead funnel.
namebox.dev was built to do the opposite. Names are produced by a language model with explicit morphology rules and TLD distribution constraints, then checked directly against the authoritative registry for each TLD. If a name shows as available, it is available right now — not "probably free based on a DNS lookup".
There is no account to create, no email to hand over, and no upsell screen.
The TLDs we cover
namebox.dev generates names across six developer-focused TLDs. Read the best TLDs for developers guide for a full comparison; the short version is that these six cover every realistic developer project — tools, apps, startups, CLIs, portfolios, and web3.
- .dev — for developer tools
- .app — for apps
- .io — for startups
- .co — for general business
- .sh — for CLIs and shell tools
- .xyz — for web3 and generic projects
How we verify availability
RDAP is the modern replacement for WHOIS, standardized in RFC 7483. It returns structured JSON from the authoritative registry operator for each TLD. A query with no matching record means the name is not currently registered — which means you can register it at any accredited registrar right now.
This is meaningfully different from "DNS does not resolve" techniques. A registered domain can have no DNS; a parked domain may or may not resolve; and a DNS result is only as fresh as the resolver's cache. RDAP has none of those failure modes — it asks the registry, in real time, and reports the registration status directly.
Getting started
- Run a search — describe your project, get 12 verified-available names.
- Best TLDs for developers — comparing the six TLDs side by side.
- How to choose a domain name — the 8-step checklist for any candidate.
- Domain name ideas — naming styles and ideas by project type.