Exchanging text messages in real time between two or more people logged into an instant messaging (IM) service. Unlike email, messages are sent immediately, whereas email can be queued up in a ...

Signal is an instant messaging and group chat app that also allows for phone and video calls. A key feature is its end-to-end encryption for all messaging and calls. This means that the content of ...

Text messaging and instant messaging are similar because they are both used to send text messages. However, text messaging ("texting") uses the cellular phone service, whereas instant messaging ...