Four transport layers. Military-grade encryption. No account required. Built for activists, journalists, and anyone who values privacy.
Zemzeme's Bluetooth layer creates a decentralized, self-healing mesh network using Bluetooth Low Energy. Every device acts as both sender and relay, extending the network range with each new peer. Works completely offline - no cell towers, no Wi-Fi, no internet connection required.
No internet. No cell signal. Just Bluetooth between devices.
WiFi Direct extends Zemzeme's offline reach beyond Bluetooth. By creating a direct device-to-device WiFi connection without any router or internet, WiFi Direct delivers higher bandwidth and significantly longer range - up to 200 meters. Perfect for larger gatherings, building coverage, or situations where Bluetooth range falls short.
Direct WiFi between devices. No router. No internet. Up to 200m range.
When internet is available, Zemzeme uses libp2p - the same networking stack powering IPFS and Ethereum - to establish direct, encrypted connections between peers. NAT traversal means you can reach anyone behind a home router or corporate firewall without any relay server ever seeing your traffic.
Direct device-to-device connections through NATs. Powered by peer-to-peer technology.
The relay protocol provides global reach through a decentralized network of open relays. Unlike traditional messaging servers, online relays are interchangeable - if one goes down or censors content, you simply switch to another. Your identity is a Curve25519 keypair, not a username on a platform.
Decentralized online relay network. No central authority. No shutdown switch.
Zemzeme cannot read your messages because Zemzeme has no server. Every cryptographic operation happens on your device.
The same cryptographic handshake that protects WhatsApp messages - independently audited and battle-tested. Uses the XX pattern for mutual authentication with Curve25519 ephemeral keys and ChaCha20-Poly1305 for symmetric encryption.
First launch generates a Curve25519 keypair locally. This is your permanent identity - never registered with any server, never transmitted unencrypted. No phone number, email, username, or any personal identifier is ever required.
Triple-tap the emergency button to instantly and permanently delete all local data. Messages, contacts, cryptographic keys, and all application state are securely overwritten. Designed for use in high-risk situations.
Enable Tor to route all internet traffic (internet connections) through the Tor onion network. Your IP address is never visible to relay operators, DHT peers, or network observers. Provides an additional layer of anonymity beyond end-to-end encryption.
Verify a contact's public key in person by scanning their QR code. This eliminates any theoretical man-in-the-middle attack, even under hostile network conditions. The gold standard for key verification in adversarial environments.
All data at rest - messages, contacts, cryptographic material - is encrypted using Android's EncryptedSharedPreferences backed by the Android Keystore system with AES-256-GCM. Nothing is stored in plaintext anywhere on the device.
Privacy is a universal right. Zemzeme speaks your language.