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