Cybersecurity

Berty: Open-secure, Free, Offline-first, peer-to-peer Messaging App That Cares about your Privacy!

Hazem Abbas

22 Oct 2025 — 3 min read

Imagine a messaging app that doesn’t need the internet. One that works in a protest, a disaster zone, or even on a remote mountain, no Wi-Fi, no cell towers, just you and your friends, connected directly through Bluetooth and mesh networks.

What is Berty?

Berty is the future of private, resilient communication, open-source, peer-to-peer, and built for freedom. No servers, no tracking, no phone numbers. Just secure, end-to-end encrypted messaging that works offline via Bluetooth, mDNS, or mesh networks.

The app is powered by the Wesh Protocol, Berty resists censorship, thrives on adversarial networks, and keeps your data truly yours. Whether you're in a protest, remote area, or just tired of surveillance-heavy apps, Berty delivers real privacy.

Install it today, on mobile or CLI, and join a decentralized network where communication stays free, even when everything else fails.

Features

Peer-to-Peer & Zero Trust: No servers. No third parties. Just direct, encrypted communication between devices.
Offline Messaging: Communicate without internet, cellular data, or Wi-Fi, using Bluetooth (BLE) and mDNS.
End-to-End Encryption: All messages are encrypted by default, no backdoors, no weak links.
No Phone Number or Email Required: Create an account anonymously, your identity stays yours.
Group Conversations: Secure, decentralized groups with real-time sync via OrbitDB and IPFS.
Censorship-Resistant: Works even under network surveillance or blocking, perfect for activists, journalists, and travelers.
Open Source & Transparent: Full code on GitHub. Audit it. Improve it. Trust it.
Developer-Friendly SDK: Build your own P2P apps using the Wesh Protocol, handle encryption, routing, identities, and lifecycle automatically.
Multi-Platform: Available on Android (Play Store), iOS (App Store), and CLI (via berty daemon & berty mini).
Designed for Emergencies: Use Berty when all other messengers fail, during protests, disasters, or in restricted regions.
Decentralized Infrastructure: Runs on IPFS + OrbitDB, distributed, resilient, and community-owned.

“Berty is not just an app, it’s a lifeline for free speech in a world that tries to silence it.”

Use-cases

When you need to share sensitive information over untrusted networks, for instance while traveling
If you want to communicate anonymously
If you want full control over your data and thus don't want to rely on third-party servers
In countries that actively monitor and temper with their network, restricting its use and censoring some of its contents
In areas with weak or no connection at all

How does it work?

The Wesh Protocol is a powerful, privacy-first framework for building decentralized peer-to-peer applications. At its core is the group, a secure, dynamic virtual space where devices can share messages and metadata using OrbitDB, built on top of IPFS.

With a full-featured, generic SDK, developers can focus on high-level app logic while Wesh handles the heavy lifting: end-to-end encryption, identity management, secure network routing, group coordination, device synchronization, and lifecycle control.

It’s designed for resilience, offline operation, and censorship resistance, perfect for apps that need to work when traditional infrastructure fails. Whether for messaging, file sharing, or collaborative tools, Wesh empowers devs to build truly distributed, secure, and user-owned experiences from the ground up.