KMPlayer is a multimedia player for Mac developed by PandoraTV. It supports a wide range of different file types, such as AVI, MPEG, TS, MKV, MP4, WEBM, MOV, 3GP, 3G2, FLV, OGM, RM, WMV, and MP3. All of which plays smoothly without any lagging or clogging. It is a completely free player, and you can easily download it by simply going into the program's official webpage.