webvm VS possimpible

Shameless self-promotion: https://webvm.io

Powered by a x86->Wasm JIT. Technical writeup: https://labs.leaningtech.com/blog/webvm-server-less-x86-virt...

Developer here. CheerpX for Flash runs the Pepper API version of Flash, and you're correct about the license. However, we don't do full Linux emulation just to run Flash - we emulate PPAPI and run the Flash player in an x86 JIT (CheerpX).

Yuri talks about CXFF's architecture here:

https://youtu.be/7JUs4c99-mo?t=1045

...but if you wanted full Linux system emulation, we got it! https://webvm.io

webvm has Tailscale sockets-over-WebSockets for networking: https://github.com/leaningtech/webvm

https://webvm.io/ supports WebVM runs x86 binaries in WASM on any browser w/ ("CheerpX includes an x86-to-WebAssembly JIT compiler, a virtual block-based file system, and a Linux syscall emulator") and for external sockets there's Tailscale networking.

IIUC that means an SSH client in a WebVM can connect to a (tailscale (wg)) VPN mesh

lets pre-load it into a https://github.com/leaningtech/webvm/blob/main/dockerfiles/debian_mini

Just to show how complex these can get look at this https://webvm.io/

Funnily enough, I believe that's completely achievable with enough time spent on it (probably a few weeks of an engineer working full time).

We have technology like WebVM [1] (from leaningtech / CheerP) or Copy86 [2] that already allows x86 machine code execution/emulation on the web. If you add an OCI client layer on top that is executable in the browser, it should be possible to run Docker containers in the browser.

[1] https://webvm.io/

[2] https://copy.sh/v86/

Hey dude, I've been screwing around implementing plan9 semantics in a OS like system for the browser (https://github.com/intigos/possimpible). I'm interested in using a x86 emulator inside a webwoker that I'm using for processes so I can run x86 code. How hard is something like this? Can you give me some pointers on how to start working on this? Thanks!

Wow I'm literally implementing this right now!!

I was stuck at parents for xmas and I picked Tannenbaum “distributed systems” and “Modern operating systems”, which gave me an idea of running a "kernel" on a browser. It was more of an academic exercise than anything else, but my intention was to have a the following:

Being able to unload and reload javascript. The initial idea was to write the website inside the website, but at the core level it requires having something akin to process isolation for javascript. It also requires the dom to be isolated.

Implementing 9p2000, and share resources across browsers. I’ve been reading about the ideas of plan 9 and i would like to implement something that allows me to connect point to point to other browsers and mount their FS into mine so we can share resources.

One of the cool results that I got was that since the dom is not directly changed (each process/worker has its own partial dom and every time that it changes it a delta is sent back to the main thread for sync) it allows javascript to be running somewhere else (another browser, back end server) and sync’ed back (much like vadaain, but more agnostic).

Most of the code was inspired by the linux kernel (which gave me a reason to go learn its internals) and is kinda nasty at some points but is written in typescript as some of you have already mentioned. Someone might find it interesting even if just for the educational purpose of it

https://github.com/intigos/possimpible