Perhaps Peanut is of interest to you?

G6NJM - Chris Digital Modes

Are you familiar with David, PA7LIM’s work on Peanut? On Peanut you can talk with other licensed amateur radio enthusiasts around the world via Windows, an Android device or network radio. Find out more about the Peanut project at http://www.pa7lim.nl/peanut/ There is also an online dashboard http://peanut.pa7lim.nl and if you need help there is a Facebook group.