Io is a programming language recognized by GitHub Linguist and used with .io.
Quick facts
What is Io
Io is a programming language recognized by GitHub Linguist and used with .io.
GitHub Linguist classifies Io as a programming language, typically using extensions such as .io.
File extensions:
Related languages
Frequently asked questions
Io is a programming language recognized by GitHub Linguist and used with .io.
Common extensions include .io.
Sources & standards
Updated 2026-08-18
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