ZEsarUX
Multi-machine Z80 emulator with debugging tools
- Open SourceGitHub
- César Hernández BañóDeveloper
- 6 SystemsSupported
- 28 Sep 2026Page Updated
Details
- Developer
- César Hernández Bañó
- Source Code
- GitHub
- Page Updated
Supported Systems
Platform Support
- Windows
- Linux
- macOS
Screenshots
Overview
ZEsarUX is an emulator by César Hernández Bañó that started as a ZX Spectrum emulator and grew to cover many machines built around the Z80 processor. Its name combines ZX, the author’s name and Unix.
It emulates the ZX80, ZX81 and every Spectrum model, clones such as the Pentagon, Chloe and Timex machines, and modern hardware like the ZX-Uno and ZX Spectrum Next. It also covers the Jupiter Ace, Cambridge Z88, Sinclair QL, SAM Coupé, Amstrad CPC and PCW, MSX, ColecoVision, SG-1000, Master System and Spectravideo, with some of these still less complete than the Spectrum.
ZEsarUX is known for its debugging tools, its ZX Desktop interface with many windows and its support for peripherals and storage devices. It is actively developed, and version 13.0 was released in June 2026 for Windows, macOS, Linux, FreeBSD, Haiku and Raspberry Pi. It is open source under the GNU GPL version 3.
Key Features
Many Z80 Machines
Covers ZX80, ZX81, every Spectrum, Amstrad CPC, MSX and more.
Modern Hardware
Emulates the ZX-Uno and ZX Spectrum Next alongside classic clones.
Debugging Tools
Known for its extensive debugging tools.
ZX Desktop
Its ZX Desktop interface shows many windows at once.
