Einstein

Emulator v2026.10.6

Einstein is an emulator dedicated to the Newton MessagePad, the PDA developed by Apple in the 1990s. It allows running the NewtonOS environment, an innovative operating system for its time, on macOS. To function, it requires an original Newton ROM (such as those from the MessagePad 100, 105, 2000, or 2100 models), making it a targeted solution for users wishing to relive or utilize software compatible with this platform.

Developed by Paul Guyot as part of open-source projects, Einstein is aimed at technology history enthusiasts or developers interested in the Newton ecosystem. Although no longer officially maintained since the 2000s, it remains functional on modern macOS (including Apple Silicon), thanks to its compatibility with x86_64 and ARM architectures via community adaptations. The emulator comes with several complementary tools (such as DockTCP or NIE Patch), designed to enhance the user experience or address hardware limitations.

Last updated:

Platforms

Architecture

Mac OS X - macOS Mac OS X - macOS Intel x86 Intel x86 Apple Silicon Apple Silicon 64 bits 64 bits

Download and links

Version history

v2026.10.6

Binary Release v2026.10.6 ==========================User Release Notes ------------------ - add ARM64 support for Windows and Linux builds

v2026.9.21

Binary Release v2026.9.21 ==========================**Note:** The macOS version of Einstein requires macOS 10.15 Catalina or laterRelease Notes ------------------ - Added support for ATA formatted PC card images (#223) - Improved PulseAudio output for smoother, more consistent audio playback (#220) _Thanks, @LaurentChardon !_ - Updated [Newt/0](https://github.com/gnue/NEWT0) dependancies - Updated [FLTK](https://github.com/fltk/fltk) dependancies - Updated build process

v2025.12.19
  • Ajout d’un nouvel élément de menu "Snapshot..." pour capturer des captures d’écran directement depuis l’interface utilisateur, avec une intégration optimisée pour une utilisation fluide (sauvegarde automatique dans le dossier Pictures ou personnalisable).
Full changelog
Binary Release v2025.12.19 ========================== User Release Notes ------------------ - Added new menu item for taking a snapshot of the current screen

Screenshots

Screenshot d'Einstein