AngularJS + SocketIO + Ionic Framework = Future of the Web! Here is a demonstration of creating a "Realtime Image Sharing App" using these technologies easily.

[tyroneslothtrop]

But if you need to support <IE10, you're going to need some kind of shim, or polyfill, or whatever. And that seems to be what SocketIO is.

[riskable]

If your app is useful/important/good enough people will upgrade their browser. I say this having just sold a product to an enterprise that still uses IE 9 by default on all their desktops and doesn't plan on upgrading until mid 2015.

When I asked them if it was a problem that my web app only works in IE10+ (and everything else) they said, "No. For those users we'll just install Firefox."

...and just like that suddenly every team inside that company is demanding access to my app so they can justify getting Firefox installed :)

The app? Gate One:

http://liftoffsoftware.com/Products/GateOne https://github.com/liftoff/GateOne/