
Telegram
Telegram is a messaging app with a focus on speed and security. It’s superfast, simple and free. It is like SMS, but more powerful. .
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 the cloud.
briar is a messaging app designed for activists, journalists, and anyone else who needs a safe, easy and robust way to communicate. unlike traditional messaging tools such as email, twitter or telegram, briar doesn't rely on a central server messages are synchronized directly between the users' devices. if the internet's down, briar can sync via bluetooth or wifi, keeping the information flowing in a crisis. if the internet's up, briar can sync via the tor network, protecting users and their relationships from surveillance.
Official Website
Source
Twitter
Works Offline Group chat Encrypted chat Decentralized End to end encryption No Internet required Bluetooth Support Sync via TOR network
Productivity Social Networking and Admin
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