.io

Country Code
🇮🇴British Indian Ocean Territory

Originally the country code for the British Indian Ocean Territory, .io has been adopted by the tech world as its de facto domain. Why? Because "I/O" stands for Input/Output, and tech people love a good pun.

If you're building a SaaS product, a developer tool, or basically anything with an API, .io is the cool kid's choice. It's like wearing a hoodie and sneakers to a board meeting — it says "we're serious about what we do, but not about how we look."

Fun fact: the British Indian Ocean Territory has a population of roughly zero permanent residents. Yet its TLD is one of the most popular in the world. The internet is nothing if not ironic.

Domains We Love

  • github.ioEvery developer's first website lives here. It's like a digital treehouse.
  • socket.ioReal-time, bidirectional event-based communication. It just works.

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