Protect your most sensitive voice calls, messaging, and files with military-grade, dual-layer post-quantum encryption. Digital independence for enterprises and governments — developed globally, GDPR compliant, hosted under Swiss privacy law.
Watch our 2-minute Introduction Video
Built for organisations that can't afford to compromise on security. Every feature designed with today's and tomorrow's mobile threats in mind.
End-to-end encrypted messages and voice notes with quantum-safe protection.
End-to-end encrypted voice and video calls with HD quality even in austere, low-bandwidth networks.
Send encrypted voice messages with the same security as text messages, perfect for quick updates and hands-free communication.
Share sensitive documents or any other kind of file with military-grade encryption and no size limits.
Cellcrypt's agile, layered post-quantum protection defends your communications against Harvest Now, Decrypt Later attacks.
Complete control over communication metadata with on-premises deployment options and zero-knowledge architecture.
Centralised management for users, policies, and security configurations.
For complete data sovereignty and metadata control, deploy Cellcrypt on-premises, in the cloud or air-gapped according to your needs.
Cloud-hosted secure communications platform developed globally, GDPR compliant, and hosted under Swiss privacy law. Enterprise-grade security with managed infrastructure for immediate deployment.
Cellcrypt On-Premises is an enterprise-grade communications platform for organisations that require absolute control over data (including metadata) and the communications infrastructure.
Choose the plan that fits your organisation's security needs
Protect your team's communications with Quantum-Resistant Encryption.
Full control over your communications infrastructure with self-hosting.
For security, our main customers don't provide testimonials, but here are some of the anonymised comments we received recently.
"Cellcrypt's post-quantum encryption gives us confidence that our communications will remain secure even as quantum threats emerge. The seamless integration was impressive."
Advanced persistent threats from government-sponsored groups
Sophisticated criminal organisations targeting communications
Emerging quantum capabilities threatening current encryption
In 2025, the communication security landscape faces unprecedented challenges.
Traditional security measures are proving inadequate against sophisticated attacks targeting every layer of communication infrastructure.
Global VoIP/VVoIP threats—from SIP floods and DDoS to harvest-now, decrypt-later—are rising fast. This definitive 2025 guide explains the risks, real breaches, standards, and the practical roadmap to harden voice and video communications now.
Read Securing VoIP &... →
In 2025, sending files securely is no longer optional—it's essential. Whether you're sharing legal contracts, personal records, business plans, or financial data, unencrypted documents are vulnerable to breaches, interception, and accidental leaks.
Read How to Send... →
Discover why secure out-of-band communication channels are mission critical for effective cybersecurity incident response. Learn how dedicated communication systems protect your crisis communications when primary networks are compromised.
Read Why use Secure... →Tell us about your organisation and requirements
Tell us about your organisation and security requirements
