Related software tools:

3ivX D4 (BeOS) v4.5 (Freeware)
3ivX is an excellent video quality MPEG-4 codec for BeOS.

3ivX Delta Codec (Amiga 68k) v1.0d3 (Freeware)
3ivX is an MPEG4 codec based on the MPEG4v3 ISO standard.

3ivx MPEG-4 v5.02 (Commercial demo)
3ivX is an excellent quality video codec based on the MPEG-4 video standard.

3ivx MPEG-4 For Mac OS X v5.02 (Commercial demo)
3ivX is an MPEG-4 codec that allows playback of all MPEG-4 compliant formats, such as DivX, 3ivX and XviD.

Cinema Craft Encoder Basic (Trial) v2.67.01.19 (Commercial demo)
Cinema Craft Encoder Basic is an affordable, high quality MPEG encoder

Cinema Craft Encoder SP (CCE) v2.50 (Shareware)
Cinema Craft Encoder SP allows you to directly encode AVI, QuickTime and DV files into DVD or SVCD compliant MPEG-2 streams, or VCD MPEG-1 streams.

Cinema Craft Encoder SP (CCE) v2.70.02.06 (Commercial demo)
Cinema Craft Encoder SP allows you to directly encode AVI, QuickTime and DV files into DVD or SVCD compliant MPEG-2 streams, or VCD MPEG-1 streams.

DivX v7.21 (Freeware)
The latest version of the DivX. That is, you need to have this file installed if you want to watch DivX movies. And latest codec gives you the best quality.

DivX (Win98/ME) v5.2.1 (Shareware)
The latest version of the DivX codec for Win98/ME platforms. You need to have this codec installed in case you want to watch or encode DivX movies.

DivX ;-) MPEG4 Codec release 3.11 alpha (Freeware)
DivX ;-) is a hacked MPEG4 codec that allows you to watch and encode DivX ;-) video clips. You really need this one, trust me...

DivX for Linux v5.05 (Freeware)
Official DivX codec for Linux -- provides same features and same quality as the Windows version does.

DivX for Mac OS X v6.7 (Shareware)
DivX5 for Mac is _the_ official DivX codec for Mac -- it has been developed by DivX Networks, same guys who have developed DivX4 for Win. Excellent MPEG-4 based video codec.

DivX Pro (Win98/ME) v5.2.1 (Shareware)
DivX is an extremely popular implementation of the MPEG-4 standard.

DivX Pro for Mac OS (15 day trial) v5.1.1 (Freeware)
DivX5 for Mac is _the_ official DivX codec for Mac -- it has been developed by DivX Networks, same guys who have developed DivX4 for Win. Excellent MPEG-4 based video codec.

DivX Pro for Mac OS X (15 day trial) v5.2.1 (Shareware)
DivX5 for Mac is _the_ official DivX codec for Mac -- it has been developed by DivX Networks, same guys who have developed DivX4 for Win. Excellent MPEG-4 based video codec.

DivXG400 v2.83 (Freeware)
Excellent DirectDraw filter that adds support for almost all known subtitles to Windows Media Player and other Windows video players.

FFmpeg rev12665 (Freeware)
FFmpeg is a complete solution to record, convert and stream audio and video.

FreeEnc v0.5 (Open source)
A libavcodec based encoder. This encoder takes AVS input and outputs MPEG2.

HC Encoder v0.23 (Freeware)
HC is a simple to use MPEG2 video encoder and is meant for creating MPEG2 video streams with a strong focus on DVD-compliancy.

TMPGEnc v2.525.64.184 (Shareware)
TMPGEnc is an excellent shareware MPEG-1 and MPEG-2 encoder that can be used also for de/muxing, cutting, merging, etc. Superb tool!

TMPGEnc XPress v4.7.3.292 (Commercial demo)
TMPGEnc XPress is a completely redesigned version of the famous TMPGEnc MPEG encoder

x264 full rev. 1342 (Open source)
x264 is a free library for encoding H.264/AVC video streams.

XviD Codec v1.2.127 Beta (Koepi's 25022006) (Open source)
XviD is a MPEG-4 compatible codec, which produces very good video quality -- something that really competes with DivX.