Messaging that keeps your conversations yours, not ours.
Quanta is an encrypted messaging platform for individuals and teams who take privacy seriously. Signal-grade encryption, self-hostable, and built to last.
Free forever for individuals. No credit card required.
What's included
Everything you need to communicate securely
Built for individuals who value their privacy and teams who need enterprise-grade security without the enterprise complexity.
End-to-End Encryption
Every message, call, and file is encrypted before it leaves your device. We can't read your conversations — no one can.
Group Messaging
Create groups of up to 500 members. Threaded replies, mentions, reactions, and pinned messages.
Secure File Sharing
Share photos, videos, and documents with confidence. Files are encrypted in transit and at rest.
Voice & Video Calls
Crystal-clear encrypted calls, one-on-one or in groups. Available on all devices.
Self-Hostable
Run Quanta on your own infrastructure. Full control over your data, your servers, your rules.
Open Protocol
Built on open standards. Audit the code, verify the encryption, trust the math — not us.
How it works
Up and running in minutes
No complex setup, no training required. Private by default, simple by design.
Create your account
Sign up with email and a strong password. No phone number required. No ads. No data collection.
// Create your account
No phone number. No credit card. No BS.
Invite your team
Share your invite link or QR code. Contacts are discovered using cryptographic hashes — your address book never touches our servers.
// Invite via cryptographic contact discovery
Scan to connect securely
Start messaging
Messages are encrypted on your device before sending. Read receipts, reactions, and threads. Works offline.
Pricing
Simple, transparent pricing
No hidden fees. Cancel anytime. Free forever for individuals.
Free
For individuals who value privacy.
- Unlimited 1:1 messaging
- Group chats up to 50 members
- 1 GB media storage
- 30-day message history
- iOS, Android & Web
Pro
For power users and small teams.
- Everything in Free
- Groups up to 500 members
- 10 GB media storage
- 1 year message history
- Voice & video calls
- Priority support
Enterprise
For organizations that need full control.
- Everything in Pro
- Unlimited members & storage
- Unlimited message history
- Self-hosting option
- SSO / SAML
- SLA & dedicated support
Ready to take back your privacy?
Join thousands of individuals and teams who have made the switch to truly private messaging.
Get started free →Free forever for individuals. No credit card required.