WebRTC - WebRTC is a free, open project that enables web browsers with Real-Time Communications (RTC) capabilities via simple JavaScript APIs. The WebRTC components have been optimized to best serve this purpose.
TechEvents.co - Tech and startup events aggregator
Voxer - Turn your phone into a Walkie Talkie. Don't waste time on phone calls and voicemails.
Facebook Local - Discover places to go and events happening near you
NextPlane - NextPlane offers cloud-based, scalable unified communications federation service for the enterprise.
Eventbrite - Discover Great Events or Create Your Own & Sell Tickets