Audio Tools
azidts 0.1 - BeSweet based CLI DTS transcoding utility
Azid 1.9 - probably the best free AC3 decoder out there. Used in most of todays transcoding tools like BeSweet.
BeLight 0.22 - probably the best BeSweet GUI. Website
BeSliced 0.2 - GUI for BeSplit, creates dummy AAC/AC3/WAV/MPx files and can fix corrupt AC3 streams.
BeSure 1.2 - direct VOB/AC3 to CD audio (regular, Dolby Digital or DTS CD) conversion.
BeSweet 1.5 - Advanced audio transcoding tool. offers one-pass & two-pass Normalization, DRC, Equalization, Sample-Rate-Conversion, Delay Assertion & more.
BeSweet GUI 0.7b5 - GUI for BeSweet, azid, lame, WavBooster, ssrc and toolame.
DeDynamic 0.2 - real time dynamic range compression Direct Show filter
HeadAC3he 0.23a - smart & fast AC3 -> WAV/MP3/OGG/AC3-WAV transcoding utility (contains SSE dlls. MMX/SSE2 dlls can be downloaded here)
Lame 3.95.1 - best and free MP3 encoder
Morgan stream switcher - allows 2 audio tracks in WMP
TFM Audio filter - real time playback dynamic range compression
Toolame 0.2k - command line based WAV -> mp2 encoding, can be used as external encoder for TMPG. Website
WaveOut fix - allows you to use the SPDIF output easily with AVI/AC3 without using Graphedit
Wbias 0.81 - GUI for BeSplit.
AVI Editing tools
AviDefreezer - fixes frozen frames
Avifrate1.10 - framerate changer for Avis
AVIMux_GUI 1.17 - simple program to multiplex multiple audio tracks and a video track to one AVI. Website
Alphatv Avi Editor - adds copyright info to your AVI files
DivFix 1.1 - to fix broken DivX downloads and crashed ripping sessions. NOT for frozen frames!
FourCC changer - allows you to change the fourCC code of your movies
Gspot 2.21 - identifies audio and video codecs in AVIs, displays length, audio and video bitrate
Ogg Cutter - utility to cut Ogg Media streams
OggMux - ogg media stream multiplexing utility
VirtualDub 1.6.12 - latest official release without any AC3 or VBR MP3 support. Website
VirtualDub 1.4c-asf - can open ASF files
VirtualDubMod 1.5.10.1 - VirtualDub plus Nandub audio + OGM/MPEG-2/AviSynth support. Website
Calculators
ABRCalc - a bitrate calculator for ABR mp3 files
aspect.zip - command line utility, takes parameters and outputs a list of target resolutions
Bearson's Bitrate Calculator - Bitrate calculator, what else?
DVD-R calculator - to help you calculate the bitrate when using IfoEdit
Framecalc - enter the lenght of the movie and your framerate and you'll get the number of frames
RSC - scalefactor calculator for ReMPEG2. If the program doesn't start install the VB6 runtime package
Codecs
3ivX D4 4.5 - an MPEG-4 codec including AAC encoder, MP4 multiplexer and MP4/AAC playback filters for any media player. Website
DivX 3.11 alpha - it appears to me that some people don't know what CTRL-F is... so learn!!!
DivX 6.0 - lastest DivX codec by DivXNetworks. The successor of DivX4.
DivX 6.0 Pro - free version with extra features. Trial version - runs out after 6 month. Website
Huffyuv 2.1 - lossless codec, suited for capturing video
XviD 1.1 - imho the best MPEG-4 ASP codec out there. Website - Binary download site
Digital TV
Cuttermaran 1.69a - frame accurate MPEG-2 cutting tool. Website
DVD2AVI PVAview 1.0 - special PVA preview version, used by PVACut. Website
MPEG2Cut 1.15 - special version of DVD2AVI to cut MPEG-2 videos. Website
MPEG2Schnitt 0.90 - easy to use tool to cut out commercials from MPEG-2 streams. Website
HDTVtoMPEG2 1.11 - extract video and audio streams from a (multi TV station) transport stream and save them to an MPG file. Website - Website 2
ProjectX 0.90 - demuxing tool for DVB streams. Website
PVACut 3.50 - PVA cutting tool. Website
PVAStrumento 2.1.0.17 - PVA demuxing tool. Website
Descrambling / Ripping tools

DVD Santa 4.0 - DVD Santa is an All-in-One software which helps you copy, convert and create DVD movies. It can convert video files into DVD format (make your .avi divx movies into a dvd playable on your home dvd player), can turn your digital photos into DVD movies with motions and background music, can transfer your digital camcorder tapes directly into DVD video, can burn DVD videos onto DVD discs.
DVD43 3.9.0 - an on-the-fly decryption layer for Windows
DVD Decrypter 3.5.4.0 - the most versatile ripper out there. Website
DVDFab Decrypter 3.0.5.0 - simple ripper that's always updated to handle copy protection by disc corruption mechanisms. Website
Vobrator 0.2 - even another rip program, also offers some special features like pcm dts conversion or pcm extraction.
vStrip 0.8f_css - outdated, old-style (brute force) ripper, has many features and is the only open source solution . Website

Decoders
DGDMPGDec 1.4.9 - latest version of the tool formerly known as DVD2AVI. Website
DVD2AVI frm - special DVD2AVI version for ScenChap
DVDx 2.2 - all in one DVD -> VCD/SVCD encoder. Website
DivX / MPEG-4 Encoders
Mov2Avi - converts Quicktime files to AVI
Nandub 1.0 RC2 - SBC encoding utility
Nandub 1.0 RC2 lumafix - luma calculations work properly in fast recompress mode
Vidomi 469 - all in one DivX encoding utility. Website
Filters
AC3Filter 1.11 - open source AC3 playback filters with features to rival any commercial competition. Website
Bicubic Direct Show resize filter - allows you to dynamically change the resolution of a movie during playback
Convolution3D
CoreAAC filter - allows AAC playback in any direct show capable media player. Website
D2VSource - d2v playback via DirectShow
Decomb 5.21 - IVTC plugin for Avisynth
DTS / AVI Filters - allows AVI/DTS muxing and playback
Elecard MPEG Video Decoder - allows you to view MPEG2 video
ffdshow - general purpose DivX/XviD decoding filter
Graphedit - THE DirectShow filter manipulation tool. Allows you to control whatever uses DirectShow
KernelDeInt - deinterlacer for purely interlaced material
Moonlight Odia Dekoda - MP2/MP3/AC3 playback filter
Ogg Vorbis Direct Show filter implementation
ReClock 1.4 - gets rid of jerky AVI / MPG playback. Website
SimpleResize filter for avisynth - fast resize filter
STMedian - motion compensated spatial/temporal median filter
Subtitle filter for Ogg media streams
TomsMoComp - motion compensation based deinterlacing filter for Avisynth
Riff CD/XA filter for / XCD
UnDot - removes dots, stray orphan pixels and mosquito noise
UnFilter - soften/sharpen filter for Avisynth
Vaguedenoiser - probably the best grain removal filter for noisy sources
Yet another temporal smoother 1.3
Launchers
Compact Disc Autolauncher 2.1
BSPLauncher - launcher for the BSPlayer
MicroDVD Autorun 1.85 - DivX autolauncher for Micro DVD Player
MDVDGo 1.0 - autolauncher, specially for Micro DVD Player
Mini DivX Launcher - fully automated codec installation and movie launch
Movie.exe 1.23
MovieLauncher Plus 1.11 - the big brother of movie.exe so to speak.
Mpeg4cd
DivX CD Launcher 1.5
Media Players
BSPlayer 2.14 - Website
DivX Player 6.4 - The official player from the DivX codec makers. Website
Media Player Classic 6.4.9.0 - just like WMP6.4 except that it has a lot more features. Website
RadLight 4 - contains Adware. Website
The Core Media Player - successor of PowerDivX Next Gen. Website
VideoLan - standalone video player that can handle almost anything without requiring any DirectShow filters - Website
Zoom Player 5.0 - WMP replacement, optimized for TV output. Website
MPEG-1/2 Encoders
bbMPEG 1.24b18 - latest beta, free MPEG-1/2 encoder
HC 0.22 - free high quality .AVS to MPEG-1/2 encoder. Website
QuEnc 0.72 - free high quality .AVS to MPEG1/2 encoder based on ffmpeg
Quicktime plugin for TMPG - allows you to convert MOV to MPG/AVI in TMPG
ReMPEG2 1.5.2 - MPEG2 Transcoder
TMPGEnc - note: MPEG-2 support expires after 30 days unless you live in the future ;). Website
Region Free Tools
DriveInfo 2.2 - tells you all about your DVD Drive
DVD Genie 4.10 - can set the region for almost any DVD software player

Subtitles
CCParser 0.05b - parses Close Captioning DVDs
DVD subtitle converter - converts Micro DVD Player files to .sup (IfoEdit) format. Webpage
MaestroSBT - Converts subtitles from SSA scripts to formats readable by DVD Maestro, Scenarist,I-Author and submux. Renders the bitmaps.
S3 Subtitle Converter 0.05b - converts I-author to Scenarist subtitles, tutorial included
Sub2stl - converts MDVDP and SubRip files to the stl format (native Maestro format)
Subadjust 1.56 - adjust subs, split subtitle files and convert subtitle files
SubCreator 1.2 - create and adjust subtitles with online preview
SubRip 1.30 beta 10 - the most uses subtitle ripper. Website
Subripper -> Scenarist Scenarist Coverter 0.1 - converts .srt to .sst
SubSynch 0.2.11 - subtitle synching helper utility
Subtitle Workshop 2.51 - complete subtitle creation, editing and conversion tool supporting 40+ subtitle formats. Webpage
SubToSup - convert VobSub files to sup (IfoEdit DVD authoring format)
SubWizard 1.3.6 - converts srt files to Subtitle creator / StreamWeaver or DVD Fusion format.
VirtualDub subtitle plugin - to add ssa subs to an AVI
VobSub 2.23 - another subtitle plugin for VirtualDub & Avisynth and DS filter for subtitle overlay during playback.
VobSubStrip 0.11 - strips unwated subtitle streams from VobSub files. Website
WinSubMux 0.2.0.2 - adds subtitles to an SVCD stream. Support Utils
ASPI checker - checks if you have a working ASPI layer on your system
ATI Macrovision remover - removes macrovision from the TV input of your ATI card
Avisynth 2.57 - probably the most powerful video editing tool based on scripting. Website
AviResetAll - resets all AVI settings for Windows, try that if the above doesn't help
AVISplitCalc 3.42 - calculates split points in your AVIs
BatchCCEWS - automates .avs encoding using CCE. To be used together with DIF4U. Website
BtWinCap Switcher - allows BtWinCap to work properly with DScaler, MoreTV, borgTV, etc
DirectX 8.1 YUV colorspace conversion fix - can help you capture using huffyuv
DoCCE4U - - automates .avs encoding using CCE. To be used together with DIF4U. Website
DoPulldown - GUI'ed version of pulldown.exe
ForceAspi 1.7 - if you get ASPI errors install this
Mode2 CD Maker 1.5a - create Mode 2 CDs that offer more space
DGDecode 1.4.9 - mpeg2 decoding plugin for Avisynth (formerly known as mpeg2dec(2/3).dll
QTReader - VFP plugin for TMPG allowing it to read QuickTime files
ReStream 0.9.0 - changes almost all MPEG-2 header options. Website
Robot4Rip 0.6 - automates preprocessing of DVD sources for Gordian Knot & other tools
Scenchap 1.28 - adds chapter points to a Scenarist project
VFAPI - includes VFAPI Reader Codec and VFAPI Converter
S/VCD Tools
DVDPatcher 1.06 - change various flags in an MPEG2 stream
Pulldown.exe - adds rff/tff flags to a 23.976fps MPEG2 stream.
SVCD2DVDMPG 1.1 - automates the SVCD -> DVD-R procedure. Website
TSCV 0.84b2 - GUI for VCDImager 0.77+ including menu and chapter capabilities. Website
VCDGear 3.50 - needed to make the dat -> mpg conversion
VCDImager 0.7.12 - latest beta
VCDImager GUI - simple GUI to the above
VCDEasy 1.1.5 - advanced VCDImager GUI, allows easy chaptering of VCDs and SVCDs including burning via CDRDAO. Website

VOB Tools

bbTools 1.9 - good demuxer and mpeg2 analyzer
ChapterXtractor - extracts chapters from an ifo for MDVDP
ChopperXP 2.7 - VOB cutting utility with preview facilities. Website
DVD Shrink 3.2 - extremely fast DVD transcoding utility. Website
DVD Rebuilder 0.98 - one click DVD transcoding tool using CCE/Rejig/QuEnc for video encoding. Full installer
DVDFab - Splitting, Stripping and Analyzing DVDs the easy way. Website
DoItFast4U 1.4.0 - re-authoring made easy. Website (currently offline)
IfoEdit 0.971 - edit IFO files, create IFO files, stream processing for DVDs, DVD image and burning capabilities included. Website
IfoUpdate 0.78 - merges PGC/Cell structures between .ifo files
ImgBurn 2.3.2.0 - Continues DVD Decrypter's burning engine
ImgTool Classic 0.91.7 - DVD image generator based on mkisofs. Website
ImgTool 1.2.1 - DVD burning program (requires Nero 6.3.0.0 or later installed). Website
MuxMan 0.15R - freeware DVD muxer with features that rival Scenarist. Website
ReAuthorist 1.0.0 - putting DoItFast4U & DoCCE4U output together to a fully working Scenarist project ready for compilation. Website
VobBlanker 2.1.3.0 - A tool to blank, replace and cut PGCs in a DVD. Website
VobEdit 0.6 - VOB editing utility, can split, demux, remux and join VOB files. Website