Signal is the most scalable encryption tool. Developed by Open Whisper Systems
License: Open Source
Apps available for Mac OS X Windows Linux Android iPhone
Telephone allows you to make phone calls over the Internet or your company’s network. Developed by Alexei Kuznetsov
Apps available for Mac OS X
Signal is focused on privacy and security, offering robust encryption and open-source code. In contrast, Telephone prioritizes ease of use and integration with existing phone networks, making it more accessible but less secure.