.MP4

.MP4 file extension

This is the list of programs to work with .MP4 extension

RealPlayer Plus

RealPlayer Plus MPEG-4 File

VMCPlayer

VMCPlayer MP4 File

3gp and mp4 Player for Windows for free.
Ahead NeroMIX

Ahead NeroMIX NeroMIX media files

DSPlayer lite

DSPlayer lite DSPlayer associated file

Nokia NSeries Music Manager

Nokia NSeries Music Manager NSeries Music Manager

VideoAudioPlayer

VideoAudioPlayer VideoAudioPlayer video

This simple software lets you play audio and video files.
3gp Player

3gp Player MPEG-4 Video

Supports all mobile phone video formats including 3GP, 3G2 (3GPP2) and MPEG-4.
Total Video Converter

Total Video Converter

Total Video Converter is an all-in-one shareware video converter for Windows.
Media Player Classic

Media Player Classic

Media Player Classic - Home Cinema is a free audio and video player for Windows.
MVS_Player

MVS_Player MVS Player

QQPlayer

QQPlayer MediaFile (.mp4)

A comprehensive media player with a number of bugs.
RealArcade

RealArcade MPEG-4 File

game manager.