Find the best available .io domain name.
Describe what you're building and namit generates brandable .io domains that are actually available — scored by AI, with matching social handles, ready to register on the spot.
What is a .io domain?
The startup extension — short, technical and instantly read as “software” by the people you most want to reach.
.io is the country-code top-level domain for the British Indian Ocean Territory, introduced in 1997. But the tech world adopted it for a completely different reason: to programmers, “I/O” means input/output — the fundamental language of computing.
Today .io is the unofficial home of startups, SaaS products, developer tools and open-source projects. It's short, modern and immediately signals that you're building something new — which is why founders reach for it the moment a good .com is gone.
A short history of .io
How .io found its place on the modern web.
.io is delegated
Created as the ccTLD for the British Indian Ocean Territory — at first a quiet, little-used extension.
Startups adopt it
As short .com names dried up, founders embraced .io for its clever “input/output” double meaning.
The default for tools
Developer platforms, APIs and SaaS apps made .io shorthand for “modern software.”
A mainstream tech brand
From weekend side projects to funded startups, .io is now a first-choice extension across the industry.
Where .io is used — and why it works
One extension, a clear personality. Here is where .io fits best.
Startups & SaaS
A .io instantly reads as “tech company,” the look investors and early users expect.
Developer tools & APIs
Libraries, CLIs and platforms wear .io like a badge — it speaks the audience’s language.
Open-source projects
Docs, demos and project sites land naturally on .io, right where developers look.
Web apps & dashboards
Short and modern, .io suits products that live in the browser rather than a storefront.
Tech portfolios
Engineers and makers use .io to show they’re part of the build-things community.
Crypto & web3
New, fast-moving projects favour .io for its clean, future-facing feel.
Well-known products built on .io
Real, recognisable names that chose .io — proof the extension reads as serious software.
- 01itch.ioIndie game marketplace
- 02socket.ioRealtime web library
- 03shields.ioRepo status badges
- 04draw.ioOnline diagramming
- 05sentry.ioError monitoring
- 06coda.ioDocs & apps platform
- 07plausible.ioPrivacy analytics
In good company — and your perfect .io may still be available. Try the live search and namit will surface open .io names in seconds.
Is a .io domain right for you?
Every extension has a personality. Here is where .io shines — and where another might fit better.
- Startups, SaaS and software products
- Developer tools, APIs and libraries
- Open-source and technical side projects
- Anything that should read as “modern tech”
- Local, brick-and-mortar businesses
- Audiences who instinctively type .com
- Tight budgets — .io costs more than .com
.io domain questions, answered
The most common things people ask before registering a .io.
Is a .io domain good for a startup?
Very. .io is one of the most recognised startup extensions and instantly signals “tech company,” which is exactly what early users, partners and investors expect to see.
How much does a .io domain cost?
A .io typically runs about $35–$45 per year — more than a .com but in line with other premium tech extensions. namit shows live prices from multiple registrars so you can compare before you buy.
What does .io actually stand for?
Officially it is the country code for the British Indian Ocean Territory. In tech culture it is read as “I/O” — input/output — which is why developers adopted it.
Is .io good for SEO?
Yes. Google treats .io as a generic extension rather than a country-specific one, so it ranks globally just like .com with no geographic penalty.
What if my .io is already taken?
Try a coined or blended name, a short prefix, or a different angle on the idea. namit generates dozens of available .io options from a single sentence so you can find an open one fast.
Can I get matching social handles for my .io?
Yes. Turn on “Social handles” and namit checks availability across 14 major platforms so your .io and your @handles stay consistent everywhere.
From a sentence to a brand in three steps
No design tools, no spreadsheets of dead domains. Just describe, choose, and launch.
Describe
Type what you're building. One sentence is all namit needs to get going.
Choose
Pick a name that's available as a domain and across every social handle.
Launch
Generate a full brand kit, register your domain, and go live the same day.
Claim your perfect .io today.
Your idea deserves a .io you own everywhere. Start free — your first 50 names are on us.