Ask HN: A good screen sharing app in the browser?

I always find the coolest websites on here, but today when I was trying to work with a client I couldn't find the one I remembered in my mind. I used to use screenleap.com because I seem to remember it not needing a plug-in. Now it needs Java.

My question is this: Is there a screen sharing app out there without cost that works in a browser so my client doesn't need to download anything?

Thank you!