Threema

>>59267488
>>>inb4 muh, no open source
exactly.

>>59267539
Ensuring security and privacy is our biggest mission. Therefore, the source code of both the server and the client software is externally reviewed on a regular basis.

Some of Threema’s core components are open source:

NaCl (encryption library)
Message API Threema Gateway
SaltyRTC (end-to-end encrypted client-server communication via WebRTC)
openMittsu (independently developed open-source desktop-client for Threema)

>>59267542
Good luck getting anyone to use that piece of trash
Next time you should have thought about open-sourcing it

>>59267549
using it since release, never let me down. pretty comfy desu with a stable userbase.

https://work.threema.ch/en
And here's a partial excuse of why its closed-source, Threema paid service.

https://www.cnlab.ch/
Here's the single, also swedish auditors that made a 1-page audit report on Threema. They said the report contains "confidential information" and wont release the full one.
Do you think the developers and auditors buddies? So Secure!

Here's a couple guys reverse-engineering the code just to audit it https://fahrplan.events.ccc.de/congress/2016/Fahrplan/events/8062.html

>proprietary
Into the trash.

>>59267556
>stable userbase
You mean it's userbase is stuck at 0 users

>>59267947
It's pretty popular in German-speaking countries.

>>59267682
>swedish
Sweden != Switzerland
.se => Sweden (there where they have commie-tier welfare)
.ch => confoederatio helvetica = Switzerland (there where they have banks and cows and chocolate and democracy)