Yes, Threema offers strong end-to-end encryption (E2EE) for messages and calls, ensuring that only intended recipients can read your content. However, its security is largely focused on personal use and small teams.

Wire also provides default E2EE but adds zero-trust, zero-knowledge architecture and compliance with enterprise security standards, making it better suited for large organizations and regulated industries.

Threema Work is available for businesses, but it has limited integrations and collaboration features.

Wire is specifically built for enterprise and cross-organization collaboration, allowing secure communication with both internal teams and external partners without sacrificing encryption.

Threema’s environment is designed for closed user groups, so bringing in outside contacts requires them to also use Threema.

Wire, by contrast, lets you securely invite external guests (clients, vendors, contractors) into your workspaces with full E2EE by default, making it more flexible for multi-company projects.

Threema works on iOS, Android, and web. Wire also supports these platforms but adds enterprise-focused deployment options such as private cloud and on-premises hosting, giving IT teams more control over data location and compliance.

Yes, Threema’s apps are open source, which boosts transparency. Wire is also open source, but it additionally undergoes regular independent security audits and offers a documented security whitepaper, giving enterprises more confidence for compliance and procurement.