What chat software are there abroad?

WhatsApp was released in 2009, when smartphones were just getting started and were acquired by Facebook. Coupled with the cooperation with Apple, it became the first chat software in the world.

WhatsApp is more concise than WeChat and pays more attention to the essence of chat tools. No circle of friends, no game platform, no expression store. Its function is simple, the program is small, and it is very smooth to use, as fast as the SMS that comes with the mobile phone. And WhatsApp is deeply integrated with the mobile phone address book. After the user's mobile phone number is verified by SMS, the contacts in the address book will be automatically added as friends, and they can send messages to each other immediately.

Skype was developed as early as 2003, and was acquired by Microsoft in 20 13. With the help of Microsoft, Skype has become the first choice for conference calls and video interviews of many large companies, and can be used on computers, mobile phones, televisions, PSV and other terminals.

Skype can make calls to landlines and mobile phones at affordable prices, and the quality of voice and video calls is very high. In addition, it also has a perfect IM function, which can send text and picture messages, transfer files, send video messages and hold multi-person meetings.

Signal is an American chat software, which is not much different from WhatsApp and Skype in function. It has the functions of single chat, group chat, file transfer, voice/video call and so on.

The advantages of signals are privacy and security. All conversations in Signal are end-to-end encrypted by default, which means that only the sender and receiver of the message can view the chat content, and even the server hosting it, the developer of Signal and hackers cannot decrypt and read it. Therefore, it is safe to say that end-to-end encryption is a reliable way to protect message delivery.