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JSLinux vs 86Box: catalog facts
JSLinux	86Box
Free Free to use in the browser.	Free Free and open source.
Web	Windows, macOS, Linux
Runs entirely in the browser with nothing to install Covers x86, x86_64 and RISC-V systems	Accurate low-level emulation of period PC hardware Wide range of emulated machines and peripherals
Slower than a native virtual machine Some systems have long boot times	Needs original BIOS ROMs and OS media to be useful Low-level emulation needs a fast host CPU
Web application	Downloadable app
Closed source	Open source
License not stated	License: GPL-2.0
No account needed	No account needed
Needs internet	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.