Real-time, realtime, or real time may refer to:

Computing

* Real-time computing, hardware and software systems subject to a specified time constraint * Real-time clock, a computer clock that keeps track of the current time * Real-time Control System, a reference model architecture suitable for software-intensive, real-time computing * Real-time Programming Language, a compiled database programming language which expresses work to be done by a particular time

Applications

* Real-time computer graphics, sub-field of computer graphics focused on producing and analyzing images in real time * Real-time camera, for controlling views in a 3D virtual environment * Real-time communication, for interactive communication * Real-time operating system, for running real-time software * Real-time protection, protection enabled constantly, rather than by, for example, an antivirus scan * Real-time text, transmitted as it is being typed or produced * Real-time Java, for real-time programs in Java programming language * Real-time disk encryption, encrypting data as it is written to disk * Real-time web, whereby information is sent to users as it becomes available * Live streaming, continuously delivering multimedia as the depicted events are happening * Real-Time Streaming Protocol, an internet protocol for real-time media streaming * Collaborative real-time editor, simultaneous editing of a document by several users * Real-time simulation, simulation able to run at the same rate as reality * Real-time blackhole list, a Domain Name System (DNS) blacklist * Real-time Cmix, a music programming language * Real-Time AudioSuite, audio plug-in software for Avid Pro Tools

Other science and technology

* Real-time locating system, a system used to automatically identify and track the location of objects or people in real time * Real-time gross settlement, an online system for settling financial transactions * Real-time kinematic, a satellite navigation technique * Real-time polymerase chain reaction, a laboratory technique which monitors target DNA during the PCR

Companies

* Realtime Associates, an American video game developer * Realtime Games Software, a defunct British video game developer * Realtime Gaming, a company that develops gambling software * Realtime Worlds, a Scottish game developer

Film, television and radio

* Real time (media), a method where events are portrayed at the same rate at which the characters experience them * Real Time (Doctor Who), ''Real Time'' (Doctor Who), a webcast * Real Time (film), ''Real Time'' (film), a 2008 film * RealTime (radio show), ''RealTime'' (radio show), a radio show on CBC 2 * Real Time (TV channel), an Italian television channel * ''Real Time with Bill Maher'', a talk/interview show on HBO

Music

* Real Time (The Jazztet album), ''Real Time'' (The Jazztet album), 1986, by the Art Farmer/Benny Golson Jazztet * Real Time (Steam album), ''Real Time'' (Steam album), 1996 * Real Time (Van der Graaf Generator album), ''Real Time'' (Van der Graaf Generator album), 2007 * Realtime (C:Real album), ''Realtime'' (C:Real album), 1997 * Realtime (Shapeshifter album), ''Realtime'' (Shapeshifter album), 2001 * Realtime (quartet), a barbershop quartet

Art and literature

*''Real Time'' (2004), a novel by Pnina Moed Kass * ''RealTime'', an Australian arts magazine * Real Time (art series), a series of clocks by Maarten Baas