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v86 vs 86Box: catalog facts
v86	86Box
Free Free and open source.	Free Free and open source.
Web	Windows, macOS, Linux
Runs whole operating systems in a browser tab x86-to-WebAssembly JIT for better speed	Accurate low-level emulation of period PC hardware Wide range of emulated machines and peripherals
Slower than native virtualization Best suited to older or lightweight operating systems	Needs original BIOS ROMs and OS media to be useful Low-level emulation needs a fast host CPU
Web application	Downloadable app
Open source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Not stated if it 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.