MindTheClub
Message and call privately with serverless end-to-end encryption
MindTheClub is a fully decentralized messenger that connects you directly with contacts without servers, logins, or phone numbers. Messages and files are stored only on your device and your contact’s device, protected by end-to-end encryption. It works offline via Bluetooth when in range and supports high-quality voice and video calls with WebRTC. The project is open source under GPLv3 and currently available for free Android open testing on Google Play.