MakerFLOSS/docs/presentations/2026-05-11-messaging.md

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Messaging Without Big Tech

Free & Open Alternatives to WhatsApp and Messenger

MakerFLOSS · May 2026

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Why Are We Here?

Most people use WhatsApp, Messenger, or iMessage.

• WhatsApp — owned by Meta; metadata harvested
• Messenger — no E2EE by default in groups; ad tracking
• Telegram — not E2EE by default; closed server
• iMessage — Apple lock-in; no Android or Linux

These apps are convenient — but the cost is your data.

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Wish-list

Property	Why it matters
End-to-end encryption	Only sender and recipient can read messages
Open source	Anyone can audit the code
Self-hostable	You control the server and the data
No phone number required	Less identity linkage
Cross-platform	Linux, Android, iOS, Windows
Federated / decentralized	No single point of failure or control

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The Landscape at a Glance

All apps below support end-to-end encryption.

App	Open source	Self-host	No phone#	Federation
Signal	Partial	✗	✗	✗
Matrix / Element	✓	✓	✓	✓
XMPP + OMEMO	✓	✓	✓	✓
Briar	✓	N/A	✓	N/A
Session	✓	Partial	✓	Partial

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Signal — The Gold Standard for E2EE

Non-profit Signal Foundation. The Signal Protocol powers WhatsApp, Google RCS, and Messenger secret chats.

Pros

• Simplest UX — works like a normal messaging app
• Audited, battle-tested cryptography; no ads, no tracking

Cons

• Phone number required — links identity to account
• Centralized — Signal's servers, Signal's rules

Best for: journalists, activists, everyday secure messaging

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Signal — Under the Hood

sequenceDiagram
    participant A as Alice's phone
    participant S as Signal Server
    participant B as Bob's phone
    A->>S: encrypted message
    Note over S: sees: who, when, how often<br/>does NOT see: content
    S->>B: encrypted message
    Note over B: decrypts with private key

Metadata still matters — Signal subpoena responses

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Matrix — The Federated Open Standard

Matrix is a protocol, not an app — like email for real-time chat.

graph LR
    EC[Element client] --> YH[your homeserver]
    YH <-->|federation| OH[another homeserver]
    FC[FluffyChat] --> OH

• Servers: Synapse (Python), Conduit (Rust), Dendrite (Go)
• Clients: Element, FluffyChat, Cinny, Fractal, Nheko
• Bridges: WhatsApp, Telegram, Signal, IRC, Discord…

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Matrix — Pros and Cons

Pros

• Fully open source, top to bottom
• Self-host your server — you own your data
• Federated — no single company controls the network
• Bridges consolidate all your chats in one place

Cons

• E2EE key management is clunky (cross-signing, key backup)
• Synapse is resource-hungry (~1 GB RAM)
• The UX of Element is still maturing

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Matrix Bridges — Stay Connected During the Transition

A bridge relays messages between Matrix and another network — both ways.

Bridge	Network	Notes
mautrix-whatsapp	WhatsApp	Puppeting — your real WA account
mautrix-telegram	Telegram	Puppeting — very stable
mautrix-signal	Signal	Fragile — Signal actively breaks 3rd-party
meshtastic-matrix-relay	Meshtastic	LoRa mesh ↔ Matrix — off-grid messaging

Catch: Puppeting bridges hold your credentials. WhatsApp's ToS prohibits it — occasional bans occur.

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XMPP (Jabber)

The original federated chat standard — 1999. Still alive and kicking.

• Extremely mature and lightweight
• E2EE via OMEMO
• Good clients: Conversations (Android), Monal (iOS/macOS), Gajim (desktop)
• Con: fragmented client quality; less beginner-friendly than Signal or Matrix

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Briar

Peer-to-peer messaging — no server at all.

• Works over Tor, local WiFi, or Bluetooth (offline!)
• Censorship-resistant by design
• Con: Android-first; no desktop client; both parties must be online to first connect

For: activists, disaster scenarios, high-censorship environments