MPEG-FAQ 4.0:

SECTION 3. - FREE AVAILABLE SOFTWARE

The named tools are:

SUBSECTION - DOS
    layr_100
    mpeg2ppm
    vmpeg
    cmpeg
    dmpeg
    secmpeg
    mpegstat
    enc11dos
    pvrg MPEG
SUBSECTION - Windows
    XingIt
    mpgaudio
SUBSECTION - WINDOWS-NT
    mpeg2ply
    mpegplay
SUBSECTION - OS/2
    mp
SUBSECTION - X-WINDOWS and UNIX
    Berkeley's MPEG Tools
    MPEG-1 Video Software Encoder
    MPEG Video Software Decoder
    MPEG Video Software Analyzer
    MPEG Blocks Analyzer
    MPEG Video Software Statistics Gatherer
    mpegstat
    mplex
    xmplay
    xplayer
    xmpeg.tk
    mpeg2encode / mpeg2decode
    layr_100
    mpegaudio
    maplay
    Scanning MPEG's ...
    MPEG decoder...
    MPEGTool
    What is "SECMPEG" ?
    PVRG-MPEG Codec
    wdgt
SUBSECTION - VMS
    vms MPEG
SUBSECTION - MacIntosh
    Sparcle
    Qt2MPEG
    Audio on Macintosh ?!
SUBSECTION - Atari
SUBSECTION - Amiga
    MPEG2DCTV
SUBSECTION - NeXT
    MPEG_Play.app
    mpegnext
SUBSECTION - SGI