RealPlayer is a multimedia player software created by RealNetworks, Inc. that allows users to play various types of media files, including audio and video. RealPlayer for Mac is a version of the software specifically designed for Mac OS X.

RealPlayer for Mac allows users to play a variety of media formats, including MP3, AAC, WMA, and WAV for audio files, and MPEG-4, H.264, and WMV for video files. It also supports streaming media and includes features such as a built-in web browser, a media library, and the ability to burn CDs and DVDs.

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RealPlayer for Mac also includes a video downloader feature that allows users to download videos from the internet and save them to their computer. Additionally, it has a feature called "Trim and Share" which enables users to easily trim videos and share them on social media platforms.

RealPlayer for Mac has gone through several iterations over the years, and the latest version as of the knowledge cutoff date of this response is RealPlayer 18.1.25.204. It is available for download on the RealPlayer website.