YPYM
About us

Decentralized Collaboration

Sovereign, end-to-end encrypted messaging built for private teams. Device-only keys, zero telemetry, and complete infrastructure ownership.

Get started (Web) Integration
German Military (Bundeswehr) & French Gov (Tchap) Standard
Matrix 2.0 Open Protocol Standard
Element X Sovereign Client Reference
Matrix Rust Core Memory-Safe Cryptography
LiveKit SFU Decentralized Voice & Video
GDPR Compliant Articles 25 & 32 by Design

Live Application Simulation

9:41
Stream E2EE · Verified Sarah Chen: New crypto session keys active
Rochman
Chats
All Unread Direct Rooms Favourites
S
Stream Architecture Core 7:13 PM
MSC4143 MatrixRTC transport verified 1
Afif
Afif Muadz 7:10 PM
New crypto session keys active
Yuliana
Yuliana K. 5:20 PM
Shared encrypted document 1
SA
Security & Audit Yesterday
Zero telemetry policy enforced
Dimas
Dimas Surya Monday
Session backup keys verified
+
‹
S
Stream Core End-to-End Encrypted
Messages are end-to-end encrypted · Session verified
Sarah Chen Voice and video calling deployed with MSC4143 MatrixRTC transport. 7:08 PM
Tested cross-platform on iOS, Android, and Desktop. Zero drops, latency under 45ms! 7:11 PM · Verified
Marcus Vance Cryptographic session keys rotated and signed via Olm/Megolm. 7:13 PM
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Settings
AR
Alex Rivera @alex.rivera:stream.ypym.app
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Version: 26.09.2 (20260921)
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Advanced settings
Appearance
System ▾
View source Enable option to view message source in the timeline.
Share presence If turned off, you won't be able to send or receive read receipts or typing notifications.
Optimize media quality Upload photos and videos faster and reduce data usage
Moderation and Safety
Hide avatars in room invite requests
Show media in timeline
Always hide
In private rooms
Always show
Live location updates
The distance you have to move to trigger an update.

Architecture Comparison

Compare how sovereign Matrix infrastructure differs from commercial platforms across key ownership, metadata exposure, and network independence.

Stream E2EE

Stream E2EE

Matrix 2.0 Open Standard
  • Decentralized Mesh No single server point of failure or vendor lock-in.
  • Device-Only Keys Olm & Megolm double ratchets. Server cannot decrypt.
  • Zero Surveillance No admin inspection dashboards, no metadata profiling.
  • 100% Free Sovereign Access No per-seat fees or ads. Administrator onboarding.
  • EU GDPR Compliant Articles 25 & 32 compliant privacy by design.
WhatsApp

WhatsApp

Meta Commercial Silo
  • Centralized Meta Cloud Single point of failure governed entirely by Meta.
  • Phone Number Required Identity permanently bound to a personal telephone SIM.
  • Metadata Profiling Communication graphs logged across Meta systems.
  • Zero Self-Hosting Closed network with no sovereign server deployment.
Slack

Slack

Salesforce Corporate SaaS
  • No Default E2EE Messages stored in plaintext on Salesforce servers.
  • Admin eDiscovery Corporate admins can export and read private direct chats.
  • Recurring SaaS Fees $8.75 to $15+ per user each month with US cloud lock-in.
  • US CLOUD Act Exposure Data subject to overseas cloud subpoenas without notice.
Microsoft Teams

Microsoft Teams

Microsoft 365 Cloud
  • Centralized Cloud Keys Microsoft holds encryption keys; plaintext indexed in Azure.
  • Purview Surveillance Automated sentiment analysis and compliance scanning.
  • Proprietary Ecosystem Locked to Microsoft 365 licensing ($6–$22+/user/mo).
Google Chat & Meet

Google Chat & Meet

Google Workspace (formerly Hangouts)
  • Cloud Key Management Google manages keys; message bodies parsed for search.
  • Google Vault Discovery Admins inspect active and deleted message histories.
  • Workspace Account Lock Requires Google Workspace subscriptions ($6–$18+/user/mo).

Frequently Asked Questions

Authoritative answers on cryptographic key ownership, protocol decentralization, GDPR compliance, and our sovereign zero-surveillance architecture.

Stream E2EE runs on the decentralized Matrix open standard. Servers never hold decryption keys or inspection dashboards. Unlike WhatsApp, accounts are sovereign and not tied to telephone numbers or corporate advertising clouds.

Yes. Zero licensing fees, zero commercial ads, and zero data monetization. Accounts are provisioned upon request by the YPYM Stream Administrator to maintain server reputation and prevent open-relay abuse.

No. Olm and Megolm session keys stay exclusively on user devices. YPYM servers route opaque ciphertext only—decryption is mathematically impossible even with full physical server access.

Yes. Stream E2EE complies with GDPR Articles 25 and 32. Because communication content is unreadable by server infrastructure, exposure risks are eliminated at the architectural level.

Rooms replicate across all participating homeservers. If one server goes offline, conversations continue without disruption and automatically re-sync when connection is restored.

Yes. Connect with any Matrix client (Element X, FluffyChat, Cinny, Thunderbird). Choose Change Server and enter our homeserver address: https://matrix.ypym.app.

Get Started with Stream E2EE

Connect from any device using the sovereign Matrix client of your choice. Available natively on iOS, Android, macOS, Windows, Linux, and Web.

Because Stream E2EE is powered by the open Matrix protocol standard, you have complete sovereignty to connect from virtually any device or client of your choice—you are never locked into a single application.

When opening your client, select Change Server and enter Stream homeserver address:

https://matrix.ypym.app
12:34
All Chats
Incident Response 12:20
System: Key rotation verified
Dimas Surya
Dimas Surya 12:13
Verified session keys

Mobile App

Native Matrix mobile client for iOS and Android built on high-performance Rust

Download on the App Store GET IT ON Google Play GET IT ON F-Droid
Continuity planning
Home
All hands
IT Helpdesk
Rochman ▶ 0:42 ılılılılılılılı
Afif Yeah, here's the sovereign roadmap proposal

Desktop & Web

Complete sovereign workspace for workstations and modern browsers

Mac Linux
Element web

Terminal & Developer CLI

Prefer the command line? Connect directly via the open Matrix REST API, native Rust TUI, or lightweight CLI tools for automated alerts.

// 1. Authenticate to sovereign Synapse homeserver
const TOKEN = await curl('https://matrix.ypym.app/_matrix/client/v3/login', {
  type: 'm.login.password',
  user: '@dev:matrix.ypym.app',
  password: '●●●●●●●●'
});

// 2. Dispatch event directly into encrypted room
await curl('https://matrix.ypym.app/_matrix/client/v3/rooms/!dev:matrix.ypym.app/send/m.room.message/', {
  headers: { Authorization: `Bearer ${TOKEN}` },
  body: { msgtype: 'm.text', body: 'Deployment pipeline #418 passed in 14s' }
});|
# 1. Install via package manager (Windows, macOS, Linux)
winget install ulyssa.iamb # or brew install iamb

# 2. Configure sovereign account (~/.config/iamb/config.toml)
default_profile = "ypym"

[profiles.ypym]
user_id = "@username:matrix.ypym.app"
url = "https://matrix.ypym.app"

# 3. Launch terminal chat with Vim keybindings
$ iamb|
# 1. Install lightweight CLI with native Megolm E2EE
pip install matrix-commander

# 2. Initialize authenticated session
matrix-commander --homeserver https://matrix.ypym.app --login password

# 3. Pipe terminal output or CI/CD alerts to room
uptime | matrix-commander --room "!alerts:matrix.ypym.app" --message -|
✓ HTTP/2 200 OK — Event Dispatched 14ms latency · 0 loss
{ "event_id": "$1726938921894aBcDeF:matrix.ypym.app", "status": "delivered", "encryption": "m.megolm.v1.aes-sha2", "room_id": "!dev:matrix.ypym.app" }
Matrix Homeserver https://matrix.ypym.app Synapse REST API backend for auth & message routing
User ID Format @user:matrix.ypym.app Cryptographically unique federated Matrix address
Device Verification Cross-Signing (Emoji) 1-click terminal trust verification from web or mobile

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