Free open sites for chat without any id
Key features: Signal isn’t the only privacy-centric messaging app, of course — we’ve covered several encrypted alternatives in the past. Download: Signal (Free) 4.4 rating across 48,000,000 reviews.
The project I'm currently working on, Facebook Chat, offered a nice set of software engineering challenges: The most resource-intensive operation performed in a chat system is not sending messages.
It is rather keeping each online user aware of the online-idle-offline states of their friends, so that conversations can begin.
Note that approach (a) changes the sending a chat message / loading a Facebook page from a one-to-one communication into a multicast to all online friends, while approach (b) ensures that users who are neither chatting nor browsing Facebook are nonetheless generating server load.
Another challenge is ensuring the timely delivery of the messages themselves.
It's really annoying and it needs to be fixed quick.