We’ve built a platform to enable push-to-talk voice communication among groups of people.
Virtual Airwaves is made to operate and feel like radio–groups are in channels, and in open/public channels you communicate with those closest to you at any time. . Our platform also allows private channels to be provisioned, which don’t need to be geographically constrained.
You can try it on any modern browser at https://cb.virtualairwaves.com/channel/1 (get a few friends on if it’s quiet near you). There are no downloads and no registration for the open channels
We also have an iOS client (https://appsto.re/us/jrj3hb.i)