After announcement in septemberFinally, the source code of the client applications of the Threema messenger has been published.
Let me remind you that Threema is a messaging service that implements end-to-end encryption (E2EE). It also supports audio and video calls, file sharing and other features expected from modern instant messengers. Apps are available for Android, iOS and Web. There is no separate desktop application, including for Linux.
Threema is developed by the Swiss company Threema GmbH. The project servers are also located in Switzerland.
The source code of the applications is available on Github under the AGPLv3 license:
Source: linux.org.ru