Witeboard

Witeboard is featured #1 on ProductHunt today!
www.witeboard.com

Witeboard lets you create quick sketches on desktop, tablet, or phone in a few minutes and collaborate with your team real-time.

Just go to witeboard.com, make a quick sketch, grab a share link and send it to your co-worker. You don't need to install anything nor create an account.

It's the fastest way to collaborate real-time with your team.