Real-time may refer to any of the following:
1. Sometimes abbreviated as RT, real-time is a process or event that occurs immediately. For example, chat occurs in real-time, where messages are seen immediately after the user presses their Enter key. In comparison, e-mail does not happen in real-time since it could take someone hours, days, or weeks to make a response.
Examples of real-time or near real-time communication
- Chat (e.g., IRC)
- SMS or Text messaging
- Talking on the Phone and VoIP
- Two-way radio communication
2. RT is also an abbreviation for Retweet.