Silence IM is described as 'Protect your communication in transit and on your phone. Silence (formerly SMSSecure) is a full replacement for the default text messaging application: all messages are encrypted locally and messages to other Silence users are encrypted over the air' and is a popular instant messenger in the social & communications category. There are more than 50 alternatives to Silence IM for a variety of platforms, including Android, iPhone, Windows, Mac and Linux apps. The best Silence IM alternative is Signal, which is both free and Open Source. Other great apps like Silence IM are Telegram, SimpleX Chat, WhatsApp and Jami.
A great way to stay in touch with your relatives, by sending both SMS and MMS messages. The app properly handles group messaging too, just like blocking numbers from Android 7+.
signal-cli is a commandline interface for the Signal messenger. It supports registering, verifying, sending and receiving messages. signal-cli uses a patched libsignal-service-java, extracted from the Signal-Android source code.
A fork of Signal for Android with proprietary Google binary blobs removed. Uses OpenStreetMap for maps and a websocket server connection, instead of Google Maps and Firebase Cloud Messaging.
KeeperChat - The leading secure messaging app.
• Private vault for messages, photos and videos • Private, encrypted media gallery (nothing is saved on device’s camera roll) • Biometric login and self-destruct protection for vault • Message retraction and self-destruct timer • Tw.
SafeSwiss The world’s most effective end to end encryption security solution including P2P Voice, encrypted email, encrypted storage, ephemeral text chat, docs share & group chat for mobile phone devices and PC's.
TeleGuard is the data-secure messenger from Swisscows. TeleGuard encrypts every message and all telephone calls with encryption algorithm currently available: SALSA 20. TeleGuard servers are located in Switzerland, they are not subject to the data protection laws of the EU /...
Fully open source instant messaging server and clients. No proprietary components or non-free dependencies. Backend in pure Go (GPL 3.0), with a command-line administration tool in python + gRPC. Clients for Android, iPhone, and Web - ReactJS (all licensed under Apache 2.0).
Graph Messenger is an UNOFFICIAL messaging app that uses Telegram's API and add new features like real multi account system, download manager and time line.
Boltgram is a fast, secure and nice messaging app that uses Telegram’s API. You can enjoy all the features of Telegram, such as end-to-end encryption, cloud-based storage, group chats, channels, bots, stickers, and more. But that’s not all.
Smoke Messenger is an open-source Instant Messenger that is known as the first mobile Messenger worlwide using the encryption algorithm McEliece. To be downloaded at F-Droid.org or Github.com. Smoke provides with its own Server-Software: SmokeStack-Echo-Server.
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