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ZEsarUX vs Fuse: catalog facts
ZEsarUX	Fuse
Free Free and open source.	Free Free and open source.
Windows, macOS, Linux	Windows, macOS, Linux
Covers every Sinclair computer Supports many regional Spectrum and ZX81 clones	Accurate emulation of many Spectrum models Accelerated .tzx tape loading
Dense interface with many options Focused on Sinclair machines and their clones	Spectrum family only Plain interface compared with newer emulators
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: GPL-2.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.