Chai.im
Enterprise Encrypted Messaging
Chai.im provides Signal Protocol encryption with enterprise compliance features. Built for healthcare, legal, and finance sectors that require audit trails, HIPAA compliance, and hardware key authentication. Consumer messaging is dominated by WhatsApp and Telegram—we're not competing there. Instead, we target regulated industries that pay premium for compliance. Our enterprise focus means sustainable revenue from organizations that need our security guarantees.
How Chai.im Works
Chai.im uses Signal Protocol for end-to-end encryption, processes AI locally on your device, and supports hardware key authentication for maximum security.
Create Account
Sign up with email or phone. Set up hardware key authentication (YubiKey, Touch ID, Face ID) for enhanced security. No password needed.
Add Contacts
Add contacts via username, email, or QR code. Each contact gets a unique encryption key automatically. Keys are exchanged securely using X3DH protocol.
Send Messages
Type your message and send. Messages are encrypted on your device before transmission using Double Ratchet protocol. Only the recipient can decrypt.
AI Processing (Local)
AI features (summaries, smart replies, suggestions) run entirely on your device using WebAssembly. No message content ever leaves your device unencrypted.
Group Messaging
Create groups of any size (Free: up to 10, Pro: unlimited). All messages are end-to-end encrypted. Perfect forward secrecy ensures old messages stay secure even if keys are compromised.
Secure Sync (Optional)
Enable encrypted cloud backup to sync messages across devices. All data is encrypted before leaving your device. You control the encryption keys.
Use Cases
Personal Messaging
Private conversations with friends and family. Signal-level encryption with modern features like AI summaries and smart replies.
Business Communication
Secure team communication with enterprise features. SSO integration, admin controls, compliance features (HIPAA, GDPR).
Developer Collaboration
Terminal client (TUI) for developers. Chat from your terminal, integrate with tools, automate workflows.
High-Security Use Cases
Hardware key authentication (YubiKey), perfect forward secrecy, local AI processing. Ideal for sensitive communications.
Key Features
Signal Protocol Encryption
Industry-standard end-to-end encryption used by Signal, WhatsApp, and others. X3DH key exchange + Double Ratchet for perfect forward secrecy.
- •X3DH key exchange
- •Double Ratchet protocol
- •Perfect forward secrecy
- •AES-256-GCM encryption
Hardware Key Authentication
Use hardware security keys (YubiKey), Touch ID, or Face ID for authentication. More secure than passwords, resistant to phishing.
- •FIDO2/WebAuthn standard
- •YubiKey support
- •Touch ID / Face ID
- •No passwords needed
Local AI Processing
AI features run entirely on your device using WebAssembly. Summaries, smart replies, and suggestions—all processed locally, nothing sent to cloud.
- •WebAssembly-based
- •100% on-device
- •No cloud AI
- •Privacy-preserving
Terminal Client (TUI)
Power users can use Chai.im from the terminal. Full-featured CLI with keyboard shortcuts, automation support, and developer-friendly design.
- •Full terminal UI
- •Keyboard shortcuts
- •Scriptable
- •Developer-focused
Group Messaging
Create groups of any size (Free: up to 10 members, Pro: unlimited). All messages encrypted end-to-end. Admin controls and moderation tools.
- •Unlimited groups (Pro)
- •End-to-end encrypted
- •Admin controls
- •Moderation tools
File & Media Sharing
Share files, images, videos securely. All files encrypted before upload. Large file support with Pro subscription (up to 1GB per file).
- •Encrypted file sharing
- •Up to 1GB per file (Pro)
- •Media previews
- •Secure storage
Encrypted Cloud Backup
Optional encrypted backup to sync messages across devices. You control encryption keys. End-to-end encrypted storage.
- •Optional cloud sync
- •E2EE encrypted
- •User-controlled keys
- •Cross-device sync
Message Scheduling
Schedule messages to send later. Useful for reminders, timed announcements, or sending messages across time zones.
- •Schedule messages
- •Recurring messages
- •Time zone support
- •Bulk scheduling
Pricing Plans
Free Tier
- Unlimited 1-on-1 messaging
- Basic groups (up to 10 members)
- Standard encryption
- Local AI processing
- Terminal client
- Community support
Pro Subscription
- All free features
- Unlimited groups (any size)
- Advanced AI features
- Cloud backup (encrypted)
- Priority support
- Custom themes
- Message scheduling
- File sharing (up to 1GB)
Enterprise
- All Pro features
- SSO/SAML integration
- Admin dashboard
- Compliance features (HIPAA, GDPR)
- SLA guarantees (99.9%)
- Custom deployment
- Dedicated support
- Audit logs
Key Metrics
Open Revenue Strategy
Complete transparency about how Chai.im generates revenue and where the money goes.
Total Revenue
See our open-core licensing approach
Revenue Streams
Enterprise Subscriptions
70%$29/seat + compliance logging fees
Pro Subscriptions
30%$9.99/month for individual professionals
Development Story
Incubation Timeline
Research & Design (July-December 2025)
Key Achievements
- Designed Signal Protocol architecture (X3DH + Double Ratchet)
- Created local AI processing pipeline (WebAssembly-based)
- Planned FIDO2/WebAuthn authentication flow
- Built terminal client (TUI) prototype
- Designed privacy-preserving analytics (no message content)
- Created Progressive Web App architecture
Technical Architecture
Encryption & Security Architecture
Signal Protocol Implementation
X3DH key exchange for initial key establishment, Double Ratchet for forward secrecy, AES-256-GCM encryption for message content.
FIDO2/WebAuthn Authentication
Hardware key support (YubiKey, Touch ID, Face ID), passwordless authentication, phishing-resistant security keys.
Local AI Processing
WebAssembly-based AI models run entirely on-device. TensorFlow.js for lightweight inference, no cloud AI processing.
Backend Stack (Rust)
Axum web framework, PostgreSQL database, Redis for caching, tokio async runtime, message queue for delivery.
Frontend Applications
Next.js 14 PWA, Terminal UI (TUI) built with Ratatui, React Native mobile apps (future), WebAssembly for crypto operations.
Encrypted Storage
Optional E2EE cloud backup using user-controlled keys. Local SQLite database with encrypted columns. Key derivation using PBKDF2.
Enterprise Features
SSO/SAML integration, audit logging (metadata only), compliance reporting (HIPAA, GDPR), admin dashboard, role-based access control.
Network Protocol
WebSocket for real-time messaging, HTTP/2 for REST API, DNS-over-HTTPS for secure DNS resolution, certificate pinning for MITM protection.
Compliance & Security
Technology Stack
Frequently Asked Questions
Ready to Get Started?
Stay tuned for Chai.im's launch in Q2 2026 (Enterprise Beta).