RealPlayer is a media player, produced by RealNetworks?. It plays a number of multimedia formats, including the proprietary RealAudio and RealVideo codecs.
The first version of RealPlayer was introduced in April 1995 as RealAudio Player, one of the first media players capable of streaming media over the Internet.
The current version for Windows is RealPlayer 10.5. It is powered by an underlying open source media engine called Helix, just like versions for other operating systems.