VIBER
Viber is a free app that allows users to message and call others, and is available on many platforms including iPhone, iPad, iPod touch, Windows, macOS, Linux, and Android. It has over a billion users worldwide and is considered one of the most popular instant messengers in the world.

TELEGRAM
Telegram is a free, cloud-based app that allows users to send messages, photos, videos, and files, as well as make voice and video calls. It’s available on smartphones, tablets, and computers, including Android, iOS, Windows, macOS, Linux, and web browsers.
Telegram is known for its end-to-end encryption, which makes communication secure. It also offers optional private chats called Secret Chats, which are also encrypted. Telegram has its own cloud, so messages and files are stored until the user deletes them, and there’s no limit to how much can be saved. However, files sent through Telegram can’t be larger than 15 GB

QZONE
Ranked at 13 with 615 million monthly users, Qzone is a social networking website and blogging service based in China that was created by Tencent in 2005. It’s integrated within QQ, Tencent’s instant messenger product: every QQ user in China automatically gets a Qzone page.

DOUYiN
Douyin is a Chinese short-video app and social media platform that is similar to TikTok, its international counterpart. Both apps are owned by ByteDance and allow users to create and share short videos, often in a vertical format. Douyin also includes features like editing tools, challenges, and a large music library and is only available in China.