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EightyOne

Free#6 of 23 in ZX Spectrum Emulators

EightyOne: Broad Sinclair system emulation with peripherals and debugging, for Windows desktop users. Ranked #6 of 23 in ZX Spectrum Emulators by our editors (8.8/10); pricing: Free plan; best for windows users emulating Sinclair systems.

8.8/10Editor score

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At a glance

Editor score
8.8 / 10
Pricing
Free plan
Best for
Windows users emulating Sinclair systems
Free plan
Yes
Paid from
Free
Facts checked
23 Sep 2026

Where it wins
- Emulates Spectrum, ZX80, ZX81, Timex and Jupiter ACE models
- Supports multiple joystick types, disks, microdrives and sound interfaces
- Includes execution breakpoints, a debugger memory window and MIDI output
Where it doesn't
- Windows-only host support limits cross-platform use
- Its broad Sinclair focus may be more than Spectrum-only users need
- MIDI output is limited to Spectrum 128 and Spectrum +2

Our verdict on EightyOne

EightyOne is a free Windows desktop emulator for ZX Spectrum and other Sinclair-compatible home computers. Its supported machines include ZX Spectrum 16K/48K, 128K, +2, +2A and +3 systems, as well as ZX80, ZX81, Timex and Jupiter ACE models. That range makes it a fit for users who want to emulate several Sinclair-era systems from one program, rather than only a single Spectrum model. The project source is released under the GNU GPL, and releases are available through its GitHub repository.

Peripheral support is a notable part of its scope. EightyOne handles joystick input, including Kempston, Fuller, Sinclair, Cursor and Boldfield types, along with floppy disk and microdrive interfaces. It also emulates sound and speech interfaces, and supports MIDI output on Spectrum 128 and Spectrum +2. These capabilities make it relevant for users whose emulation needs extend beyond loading and running software. The included execution breakpoints and debugger memory window also suit users who want to inspect program execution, rather than treating the emulator only as a way to revisit games.

The main constraint is platform fit: EightyOne is described as a Windows emulator, so it is not a match for users seeking a native macOS or Linux option. Its range of models and hardware support may also be unnecessary for someone focused on a narrow Spectrum-only setup. The project’s GPL source is a useful consideration for users who value open-source software, while buyers seeking a cross-platform emulator should look elsewhere. For Windows users interested in both Spectrum and related Sinclair machines, its model coverage and debugging tools are the clearest reasons to consider it.

Your product? Our editors can test EightyOne in depth and publish a review, labelled as paid · from $149/mo →

EightyOne pricing

Plans Free planFree Free to use — no paid tier required for the core job.

See plans on github.com

EightyOne fact sheet

Free plan	Yes
Paid from	Free
Supported Spectrum models	Not verified
Host platforms	Windows
Tape formats	Not verified
Snapshot formats	.Z80
Built-in debugger	Yes
Open source	Yes
Peripheral support	Joysticks (Kempston, Fuller, Sinclair 1, Sinclair 2, Cursor, Boldfield); floppy drives; microdrives; sound and speech interfaces; MIDI output
Deployment	Desktop
Platforms	Windows
Built for	Solo (editorial estimate)
Pricing	Free plan
Website	github.com
Facts checked	23 Sep 2026

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Featured on iTechGuides

EightyOne is listed in our ZX Spectrum Emulators directory. Add the badge to your site — it links back to this page.

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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

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Last updated 7 Oct 2026 · How we research and update