Add marp slide infra and messaging alternatives presentation
- build-slides.sh: local build script (uses marp CLI or Docker fallback) - slides/.gitkeep: output directory tracked, generated HTML gitignored - docs/møder/2026-05-xx-messaging-presentation.md: first presentation Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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.gitignore
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.gitignore
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# ---> Ansible
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*.retry
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# ---> Generated slides (built by marp on server or locally via build-slides.sh)
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slides/*.html
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slides/*.pdf
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build-slides.sh
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build-slides.sh
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#!/usr/bin/env bash
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set -euo pipefail
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REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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OUTPUT_DIR="$REPO_ROOT/slides"
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mkdir -p "$OUTPUT_DIR"
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# Find all markdown files with marp: true frontmatter
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SLIDES=()
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while IFS= read -r f; do
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SLIDES+=("$f")
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done < <(grep -rl "^marp: true" "$REPO_ROOT/docs" --include="*.md" 2>/dev/null || true)
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if [ ${#SLIDES[@]} -eq 0 ]; then
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echo "No marp presentations found in docs/."
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exit 0
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fi
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echo "Found ${#SLIDES[@]} presentation(s):"
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printf ' %s\n' "${SLIDES[@]}"
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if command -v marp &>/dev/null; then
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marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}"
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else
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echo "marp not found locally — using Docker (marpteam/marp-cli)..."
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REL_SLIDES=()
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for f in "${SLIDES[@]}"; do
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REL_SLIDES+=("${f#"$REPO_ROOT"/}")
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done
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docker run --rm \
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-v "$REPO_ROOT":/home/marp/app:ro \
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-v "$OUTPUT_DIR":/home/marp/output \
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marpteam/marp-cli --html --output /home/marp/output "${REL_SLIDES[@]}"
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fi
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echo "Done — slides in $OUTPUT_DIR/"
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docs/møder/2026-05-xx-messaging-presentation.md
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docs/møder/2026-05-xx-messaging-presentation.md
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---
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marp: true
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theme: default
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paginate: true
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---
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# Messaging Without Big Tech
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### Free & Open Alternatives to WhatsApp and Messenger
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MakerFLOSS · 2026
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---
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## Why Are We Here?
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Most people use WhatsApp, Messenger, or iMessage.
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**What's the problem?**
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- **WhatsApp** — owned by Meta; metadata harvested; backup encryption only added under pressure
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- **Messenger** — no E2EE by default in groups; extensive ad tracking
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- **Telegram** — *not* E2EE by default; groups are server-side; closed server
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- **iMessage** — Apple lock-in; not available on Android or Linux
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These apps are *convenient* — but the cost is your data and your network.
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---
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## What Would We Want Instead?
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| Property | Why it matters |
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|---|---|
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| End-to-end encryption | Only sender and recipient can read messages |
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| Open source | Anyone can audit the code |
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| Self-hostable | You control the server and the data |
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| No phone number required | Less identity linkage |
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| Cross-platform | Linux, Android, iOS, Windows |
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| Federated / decentralized | No single point of failure or control |
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No single app checks every box — but the trade-offs are manageable.
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---
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## The Landscape at a Glance
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| App | E2EE | Open source | Self-host | No phone# | Federation |
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|---|---|---|---|---|---|
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| **Signal** | ✓ | Partial | ✗ | ✗ | ✗ |
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| **Matrix / Element** | ✓ | ✓ | ✓ | ✓ | ✓ |
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| **XMPP + OMEMO** | ✓ | ✓ | ✓ | ✓ | ✓ |
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| **Briar** | ✓ | ✓ | N/A | ✓ | N/A |
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| **Session** | ✓ | ✓ | Partial | ✓ | Partial |
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| **Threema** | ✓ | ✓ | Partial | Optional | ✗ |
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---
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## Signal — The Gold Standard for E2EE
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**Created by** Moxie Marlinspike (2013), now run by the non-profit Signal Foundation.
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**The Signal Protocol** is the encryption layer also used by:
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WhatsApp, Google Messages (RCS), Skype, Facebook Messenger (secret chats)
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### Pros
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- Extremely simple UX — works like a normal messaging app
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- Calls, groups, disappearing messages, Stories, Note to Self
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- Audited, battle-tested cryptography
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- No ads, no tracking, no data sold
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### Cons
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- Phone number required — links your identity to your account
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- Centralized — Signal's servers, Signal's rules
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- Server source code published but community forks are blocked
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---
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## Signal — Under the Hood
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```
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Alice's phone Signal Server Bob's phone
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───────────── ───────────── ──────────
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[message] ──encrypt(Bob's key)──▶ [stores ciphertext] ──────▶ decrypt ──▶ [message]
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```
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- The server sees: *who* talks to *whom*, *when*, and *how often*
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- The server does **not** see: message content
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- This metadata is still significant — [read the Signal subpoena responses](https://signal.org/bigbrother/)
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**Best for:** journalists, activists, family group chats, anyone who wants simple + secure
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---
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## Matrix — The Federated Open Standard
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Matrix is a **protocol**, not an app — like email, but for real-time chat.
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```
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[your homeserver] ←──federation──▶ [another homeserver]
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▲ ▲
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Element client FluffyChat client
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```
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- **Standard**: matrix.org (open spec, anyone can implement)
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- **Server software**: Synapse (Python), Conduit (Rust), Dendrite (Go)
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- **Clients**: Element, FluffyChat, Cinny, Fractal (GNOME), Nheko
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- **Bridges**: WhatsApp, Signal, Slack, Discord, IRC, XMPP — all bridgeable
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---
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## Matrix — Pros and Cons
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### Pros
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- Fully open source, top to bottom
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- Self-host your own homeserver — you own your data
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- Federated — no single company controls the network
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- Bridges let you consolidate all your chats in one place
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- Persistent rooms, Spaces (like Discord servers), threads
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### Cons
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- E2EE key management is still clunky (cross-signing, key backup)
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- Synapse is resource-hungry (~1 GB RAM for a small server)
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- Message history sync across federation is slow
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- The UX of Element is still maturing
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---
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## Matrix — Why It's Interesting for MakerFLOSS
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We could run our own homeserver at `matrix.makerfloss.eu`.
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**What this gives us:**
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- Full control over our community chat
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- Bridges to reach people still on WhatsApp or Messenger
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- A playground for learning about self-hosted infrastructure
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- Federated — members can also use matrix.org or their personal servers
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**Resources needed:**
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- A VPS (we already have one at `88.99.32.236`)
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- ~500 MB RAM for Conduit (lighter than Synapse)
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- A subdomain + TLS (Traefik already handles this)
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---
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## Two More Worth Knowing
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### XMPP (Jabber)
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The *original* federated chat standard — 1999. Still alive and kicking.
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- Extremely mature and lightweight
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- Good clients: **Conversations** (Android), **Monal** (iOS/macOS), **Gajim** (desktop)
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- E2EE via OMEMO
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- Con: fragmented client quality; setup less beginner-friendly
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### Briar
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Peer-to-peer messaging — *no server at all*.
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- Works over Tor, local WiFi, or Bluetooth (offline!)
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- Censorship-resistant by design
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- Con: Android only (iOS in beta); no desktop client; both parties must be online to first connect
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---
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## Participation — Let's Talk
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**Round 1: Your current situation** *(2 min, pairs)*
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- What messenger do you use most, and why?
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- Is there anything about it that bothers you?
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**Round 2: Barriers** *(group discussion)*
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- What's the hardest part of switching or convincing others to switch?
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- "But all my friends are on WhatsApp" — how do you handle it?
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---
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## Participation — Hands-On Options
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Pick one to try *right now*:
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**Option A — Signal**
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1. Install Signal on your phone
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2. Register with your phone number
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3. Send a message to the person next to you
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**Option B — Matrix (web)**
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1. Open [app.element.io](https://app.element.io) in your browser
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2. Create a free account on matrix.org
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3. Join the room `#makerfloss:matrix.org` (if it exists — let's create it!)
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**Option C — Discussion**
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Should MakerFLOSS set up a Matrix homeserver? What would it take?
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---
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## Resources
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| Resource | Link |
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|---|---|
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| Signal | signal.org |
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| Matrix spec | spec.matrix.org |
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| Element client | element.io |
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| FluffyChat | fluffychat.im |
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| Conduit server | conduit.rs |
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| Briar | briarproject.org |
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| Privacy Guides (comparison) | privacyguides.org/en/real-time-communication |
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| EFF Surveillance Self-Defense | ssd.eff.org |
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---
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## Summary
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- **Signal**: easiest switch, best UX, E2EE by default — but centralized and requires a phone number
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- **Matrix**: most aligned with FLOSS values, self-hostable, federated — but more complex
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- **XMPP**: the old guard, still solid for the technically inclined
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- **Briar**: for extreme scenarios — no infrastructure needed
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**The best alternative is the one people will actually use.**
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---
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# Questions?
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*Slides made with [Marp](https://marp.app) — open source markdown slide tool*
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