FairUse Wizard ::
• Easily create movies that will play on your standalone player with the DivX and XviD codecs
• Use cutting edge technology with new codecs  like the well-known H264, VP7, or the ffVFW codec suite.   
• Store several movies on a single DVD
• Protect your expensive DVD collection by letting the children use a backup copy while the original discs stay in a safe place   
• Encode tens of episodes of your favourite shows in only a few mouse click
• Let the wizard be your guide at every step of the conversion process.   
• Encode up to two audio tracks so you can chose between original and dubbed version at playback
• Preview subtitles on the preview screen during the encoding setup.

FilmShrink :: is a DVD-Video backup software for Windows, which transcodes video titles into the RealMedia format (RealVideo / RealAudio 10) powered by the Helix DNA platform. It supports batch encoding, multichannel audio, subtitles, and it has a user-friendly GUI, so it's very easy to use for everyone.

nandub :: Variable bitrate DivX Video Encoder.

PgcEdit is a DVD IFO and Menu editor designed to allow the modification of the navigation commands and parameters of an already authored DVD structure.
PgcEdit is also an excellent tool to learn how a DVD works, with his powerful Trace function.
Since v0.6.0, PgcEdit is also the first program able to burn a Double Layer DVD-Video on DL DVD+R or DL DVD-R, with an interactive interface (including a preview), to select the position of the layer break.

PgcEdit is free and open source (GPL license).

SubtitleCreator allows you to create new subtitles for your DVD's. It has a Wizard interface, advanced synchronization features, DVD preview, and a simple WYSIWYG editor. The latest version even has support for Karaoke.