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Threema WorkTrillian
Paid

Paid business licences, with a 30-day free trial.

 Freemium

Free for individuals, with paid plans for businesses and healthcare.

macOS Windows, macOS, Linux, Android, iOS
  • End-to-end encrypted messaging for business use
  • Focus on data protection and compliance
  • Apps for all major desktop and mobile platforms
  • HIPAA-compliant plans for healthcare use
  • Paid licences aimed at organisations, not individuals
  • Separate from the consumer Threema app
  • Proprietary and closed source
  • Business and healthcare features require a paid plan
Downloadable app Downloadable app, Hosted service
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Needs internet

Checked October 2, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.