ATAK Plugin: Hammer

Signal is a messaging app built on privacy.

Telegram is a simple, fast, and secure messaging app that can be used simultaneously on multiple devices.

Threema is the world’s best-selling secure messenger, used by more than 12 million people in over 175 countries, developed in Switzerland, and designed with privacy and data protection in mind.

Decentralized social network offering Twitter-like experience with community-managed feeds, content moderation tools, and no ads, but plagued by account blocking issues, connection problems, and authentication bugs.

Session is an app for private messaging that ensures the security and confidentiality of your conversations.

A decentralized messaging app that uses mesh Bluetooth networks to enable communication without internet or registration, but suffers from frequent crashes and media transmission issues.

SimpleX - the first messaging platform that has no user identifiers of any kind - 100% private by design!

Freedom of communication on your terms