Quack

🦆 Quack — Encrypt the web itself.

Want private conversations but can't get everyone to switch to Signal? Quack lets you send encrypted messages on ANY website — YouTube comments, Twitter DMs, Reddit posts, anywhere you can type.

HOW IT WORKS
• Type "Quack://" in any text field to open a secure composer
• Write your message, hit encrypt, paste the ciphertext
• Recipients with Quack automatically see the decrypted message
• No one else can read it — not the platform, not hackers, not anyone

WHY QUACK?
✓ No app switching — Use the sites you already use
✓ Quantum-resistant — ML-KEM-768 + AES-256-GCM cryptography (NIST approved)
✓ Wallet-grade security — Master password, auto-lock, encrypted vault
✓ Stealth mode — Hide who you're messaging from observers
✓ Group encryption — Share keys with trusted contacts
✓ Zero tracking — 100% client side

PERFECT FOR
• Private conversations on public platforms
• Sharing sensitive info where others might see
• Groups who want secure communication without changing apps
• Anyone who values privacy but lives on the open web

Your keys never leave your device. Your messages stay yours. Welcome to the encrypted web.

Open-source at https://github.com/0xneves/quack