Developer Files

Interface Builder

by Apple, Inc. · opens 2 file types
Mac OS
AT A GLANCE
DeveloperApple, Inc.
PlatformsMac OS
Opens2 file types
Get it fromdeveloper.apple.com
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2 file types verified
Last reviewed Sep 2026

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What is Interface Builder?

Interface Builder is Apple's visual design tool for building user interfaces for macOS and iOS applications. Developers drag and drop UI components onto a canvas and connect them to source code via outlets and actions without writing layout code manually. Since Xcode 4 it has been integrated directly into the Xcode IDE rather than existing as a separate application.

Files Interface Builder opens

2 formats
Developer Files

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Download Interface Builder

SOURCEdeveloper.apple.comofficial site - avoid third-party download portals
PLATFORMSMac OS

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programs & formats

Files Interface Builder opens most

1.NIBInterface Builder user interface resources
2.XIBApple Interface Builder file

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