Phantachat is an online chat service designed to mimic the way humans converse in real life.

Existing text based communication apps (i.e. email and instant message) save your message history, which encourages asynchronous communication. To bring online communication to a more intimate level, Phantachat sends your message in real time as you are typing and does not save any chat history. Each message is displayed on screen for a few seconds before disappearing, promoting synchronous communication where both users are expected to be online at the same time to actively engage in the conversation.

Read about how it is made here.