Pusher - http://pusherapp.com/
We're doing awesome stuff with Websockets to provide realtime browser push as a service. People with ace Ruby skills and a keen interest in realtime messaging should drop us a line (jobs@)
Panda - http://www.pandastream.com/
Cloud video encoding service. Checkout http://jobs.github.com/positions/64dc8f0c-23e1-11e0-97e7-85d... for more info.
Contact me if you have any questions or are interested: damien@pusherapp.com/pandastream.com