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Hmm, when I first opened this I thought they implemented a POSIX api on top of js, but it does not look like they actually did this. Actually I think it could b

Hmm, when I first opened this I thought they implemented a POSIX api on top of js, but it does not look like they actually did this. Actually I think it could be really cool if someone did this. Not sure what it would take, maybe a libc and kernel and then recompile gnu tools and a character driver for the terminal, local storage for persistence. I think it could be a neat alternative to spinning up a VM to test something, obviously not useful for running anything real. If it was fast enough though... I could see using it as a dev environment if you were stuck in windows or something. Or just for online coding tutorials, or a way to teach kids "real" computer OSes if they only tablets or something.

emeryberger 10y ago
Doppio (https://github.com/plasma-umass/doppio https://github.com/plasma-umass/doppio) is exactly this: a POSIX layer (for a single process), while Browsix is a Unix layer. Both are JS only. Doppio implements a ton of libc functionality, enough to host a full JVM interpreter (see http://plasma-umass.github.io/doppio-demo/ http://plasma-umass.github.io/doppio-demo/). Doppio contains BrowserFS (available separately as https://github.com/jvilk/BrowserFS https://github.com/jvilk/BrowserFS), an in-browser file system that abstracts over local storage and lets you mount remote filesystems like Dropbox, Zip files, and more. Archive.org is using it for all of its DOS and Windows games.