1)   Aom MP4 Converter 1.5
Aom MP4 Converter is a Fast and Easy-to-use Video to MP4 converter for Play on MP4 player, iPod, PSP, 3GP mobile phone, or other portable video device. Convert AVI, MPEG, WMV to MP4; RM, RMVB, MOV, ASF, MPG, MPE, M1V, MPV2, DAT, VOB etc..to Mp4.

 2)   VMCPlayer 1.4.3
VMCPlayer is a free player for watching video from mobile phone and iPod on your PC. Supports all mobile phone video formats including *.3GP, *.3G2 and *.MP4, most of the video and audio codecs are supported. It is fast, powerful and easy-to-use.

 3)   Aom MP4 Converter Ripper 1.7
Aom MP4 Converter is a Fast and Easy-to-use Video to MP4 converter for Play on MP4 player, iPod, PSP, 3GP mobile phone, or other portable video device. Convert AVI, MPEG, WMV to MP4; RM, RMVB, MOV, ASF, MPG, MPE, M1V, MPV2, DAT, VOB etc..to Mp4.

 4)   mp4 Player 4.0
Mp4 Player is a free software that allows you to see mp4 video file on your PC. It finds for you best mp4 codec if you don't have on your machine and then allow you to see mp4 video easily on your PC. It is free.