Rosetta (software)

Rosetta is a dynamic binary translator developed by Apple Inc. for macOS, an application compatibility layer between different instruction set architectures. It enables a transition to newer hardware, by automatically translating software. The name is a reference to the Rosetta Stone, the artifact which enabled translation of Egyptian hieroglyphs.

For other software products or projects named "Rosetta", see Rosetta Stone (software) and Rosetta (disambiguation).

Rosetta
Developer(s)Apple Inc.
Operating systemMac OS X 10.4.4–10.6.8 (Intel)
macOS 11.0–present (ARM)
Linux guest
TypeBinary translation, emulation

The first version of Rosetta, introduced in 2006 in Mac OS X Tiger, was part of the Mac transition from PowerPC processors to Intel processors, allowing PowerPC applications to run on Intel-based Macs. Support for Rosetta was dropped with the release of Mac OS X Lion (10.7) in 2011.

Rosetta 2, introduced in 2020 as a component of macOS Big Sur, is part of the Mac transition from Intel processors to Apple silicon, allowing Intel applications to run on Apple silicon-based Macs.

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