Onion - Anonymous social networking

Thank you very much for your comment， it has helped me improve. I have added more description. This is actually an anonymous chat software. Users can view messages posted anonymously by others and interact by commenting on these messages.

Is this a reddit alternative, or something else?

They are not the same; Onion is an anonymous communication software. Although you can invite friends to join, you do not know who sent this message. It only displays "from a friend," and the friend will choose a nickname for themselves. Users cannot identify who the user is through this nickname. The reason for the anonymity of the messages is that users may express genuine feelings, which could be secrets or complaints. They want someone to help them relieve boredom or solve confusion, discuss specific topics, without wanting others to know who they are.