15.0k
Signal-Desktop
A secure and private messenger application available for Windows, macOS, and Linux.
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1 Open Source Alternatives to Threema
There are 1 open-source alternatives to Threema in this directory. The most popular is Signal-Desktop with 15.0k GitHub stars. All are open source, free to use, and many can be self-hosted.
All open-source alternatives to Threema
Frequently asked questions
What are the best open-source alternatives to Threema?
The top three are Signal-Desktop(15.0k stars). All are open source and free to use.
Are these alternatives to Threema free?
Yes. Every tool listed here is open source and free to use in your own projects. Many can be self-hosted on your own infrastructure, which means no subscription fees and full control over your data.
Can I self-host an alternative to Threema?
Many of the alternatives listed are self-hostable. Each tool's page lists hosting details, system requirements, and licensing terms.
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