To all those who question the value of this, it's that we now have a new ssh client that runs everywhere Chrome runs. Additionally and non-trivially, the innards of the terminal UI is now exquisitely accessible to the legions of developers who know HTML and CSS. Presumably it's a small step to embedding cross-domain SSH into a webapp.
That said, there are minuses. The big minus is that Chrome, like literally every piece of software that handles the download and installation of other software, provides an entirely new way to discover, download, and install software. The instructions for downloading putty for windows is simple and stable over time. The instructions for installing this plugin are Chrome specific and unstable over time.
Overall, I'd say this plugin has marginal positive value.
I think Nacl is portable. But it wouldn't run on Android right now anyway since the Chrome browser on Android doesn't have access to the Chrome webstore and extensions.
NaCL is not portable, unless you happen to be running the same architecture that the software was compiled for. You might be thinking of PNaCL which is still very experimental: http://www.chromium.org/nativeclient/pnacl
Well that's just dumb. They should've made ARM a first citizen for ChromeOS from day one. I saw a rumor about a future Samsung Chromebook that will use a dual core 2 Ghz Cortex A15 chip, so maybe it's coming soon.
That said, there are minuses. The big minus is that Chrome, like literally every piece of software that handles the download and installation of other software, provides an entirely new way to discover, download, and install software. The instructions for downloading putty for windows is simple and stable over time. The instructions for installing this plugin are Chrome specific and unstable over time.
Overall, I'd say this plugin has marginal positive value.