BCM - Blockchain Messenger has been discontinued. Similar apps include Signal, which is free and open source. Other options are Telegram, Element, Matrix and Tox. You're spoiled for choice with Encrypted Chat Apps like BCM - Blockchain Messenger: we list more than 100 alternatives for Android, iPhone, Windows, Mac and Linux.
ChatSecure is a free and open source messaging app that features OTR encryption over XMPP. You can connect to your existing accounts on Facebook or Google, create new accounts on public XMPP servers(including via Tor), or even connect to your own server for extra security.
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Bitmessage is a P2P communications protocol used to send encrypted messages to another person or to many subscribers. It is decentralized and trustless, meaning that you need-not inherently trust any entities like root certificate authorities.
Imo is a free, simple,secure and faster international video call & instant messaging app.
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qTox - The most feature-rich Tox client; P2P instant messaging, audio and video calls.
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.
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Kik is way more than just messaging. It’s the easiest way to connect with your friends, stay in the loop, and explore – all through chat. No phone numbers, just pick a username.
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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).
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Quantum-resistant encrypted messaging, video/audio calls, and file transfers in the browser with optional registration and no downloads required.
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