For a starter many large Chinese software develop their own in-house tools, including chat, planning and office. It is usually a complete suite so that everythi

For a starter many large Chinese software develop their own in-house tools, including chat, planning and office. It is usually a complete suite so that everything interacts with everything else pretty well. For example you can directly open a file shared by someone else in a chat in office locally -- this was my experience in Tiktok. And you probably already know Wechat and QQ. And since China provides a lot of embedded devices to the world, there is a big chance that your doorbell or cleaning robot uses code written by a Chinese company.