*Alternative to WhatsApp* — The messenger that puts security and privacy first. Pay once, chat forever. No collection of user data. Open Source.
### [Signal](https://signal.org/en/) [![Generic badge](https://img.shields.io/badge/FOSS-OSS-blue.svg)](https://img.shields.io/badge/FOSS-OSS-blue.svg) **Requires a phone number.**
*Alternative to WhatsApp/SMS* — Signal is a cross-platform encrypted messaging service developed by the Signal Foundation and Signal Messenger LLC. It uses the Internet to send one-to-one and group messages, which can include files, voice notes, images and videos. Its mobile apps can also make one-to-one voice and video calls