Briar An open-source decentralized and encrypted messaging app even without internet connection via Wi-Fi and Bluetooth. Messages are stored securely on your device, not in... Free Open Source Android Bluetooth Support Decentralized Encrypted chat End-to-end encryption ... Group chat No Internet required Works Offline Sync via TOR network Add a feature 13 Like
FireChat Chat "off-the-grid" with people around you – even if there is no Internet connection or mobile phone coverage. Free Android iPhone Android Tablet iPad Decentralized Group chat No Internet required Add a feature 16 Like
Murmur Murmur is a free anonymous messaging / microblogging app that does not require an Internet connection!. Free Open Source Android Decentralized No Internet required Off-the-grid Add a feature 3 Like
The Serval Mesh It works by using your phone's Wi-Fi to not communicate with other phones on the same network. Or even by forming impromptu networks Consisting only of mobile... Free Open Source Android Push to talk Add a feature 5 Like
Bridgefy Integrating Bridgefy allows mobile devices to communicate in a secure and efficient way across large distances, without having them depend on access to a Wi-Fi network... Free Android iPhone Works Offline Add a feature 1 Like