Compare software

Threema WorkSynology Chat
Paid

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

 Free

License-free, but it requires a Synology NAS to host the server.

macOS Windows, macOS, Linux, Android, iOS, Web, Self-hosted
  • End-to-end encrypted messaging for business use
  • Focus on data protection and compliance
  • Messages stay on your own NAS
  • Optional end-to-end encryption for conversations or channels
  • Paid licences aimed at organisations, not individuals
  • Separate from the consumer Threema app
  • Only runs on Synology NAS hardware
  • Closed source
Downloadable app Downloadable app, Web application, Self-hosted
Closed source Closed source
License not stated License not stated
Not stated if an account is needed Account needed
Needs internet Not stated if it works offline

Checked October 2, 2026

Checked October 1, 2026

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