AnyRoom vs WhatsApp: What are the differences?
AnyRoom: A self-hosted, Twilio-based system for temporary conference calls *. Create unique conference rooms on demand, without having to reuse the same IDs. Self-hosted free option works for most, but commercial licensing is available for more features and support; *WhatsApp:** *A freeware, cross-platform messaging and Voice over IP service *. It is a cross-platform mobile messaging app for iPhone, BlackBerry, Android, Windows Phone and Nokia. It allows users to send text messages and voice messages, make voice and video calls, and share images, documents, user locations, and other media.
AnyRoom and WhatsApp belong to "Phone" category of the tech stack.
AnyRoom is an open source tool with 228 GitHub stars and 13 GitHub forks. Here's a link to AnyRoom's open source repository on GitHub.