MP3FS is a read-only FUSE filesystem that transcodes FLAC audio files to MP3 on the fly when opened and read. It is useful to enable the use of your FLAC collection with software and/or hardware that only understands MP3s. It is also a novel alternative to traditional MP3 encoder applications. Just use your favorite file browser to select the files you want encoded, and copy them somewhere.
Versatile Encoder allows you to encode your own videos into good quality DivX files. The input can be a sequence of files (as generated by blender), a single file (if you want to recompress something), or a VCD (if you need to back up a movie). This piece of software tries to guess good defaults and to help the user in making choices.
shrip is an application for ripping and encoding DVDs into AVI, OGM, MKV, or MP4 files. It relies on OGMRip to perform its tasks. It also supports a wide variety of codecs such as MPEG4, XviD, Theora, and H.264 for video, Vorbis, MP3, AAC, AC3, DTS, and WAV for audio, and VobSub and Srt for subtitles.
CD Stack is an advanced CD ripping and encoding application. It features shortcuts for when you have a large number of discs to rip and allows precise control over MP3 encoding. It can optionally import songs into iTunes, complete with track information and cover art. It uses the LAME Encoder to encode MP3s. A Universal binary is available.