Survey of Real-time Communications (RTC) services in use

Description of the project: survey the free (like Ring or Jitsi), semi-proprietary (like Telegram) and proprietary (like Skype and ?WhatsApp) communications software that people use. Create a concise inventory of the compelling features of each service/software. Study the Distributed Hash Table used by the Ring project and propose ways that Ring could implement features found in competing products like ?WhatsApp and Telegram. Survey the problems that people have promoting these completely free solutions to their friends and families and provide specific strategies and tactics that will succeed.