FFmpeg is the leading multimedia framework, able to decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created. It supports the most obscure ancient formats up to the cutting edge.
File Converter is a very simple tool which allows you to convert and compress one or several file(s) using the context menu in Windows Explorer.
last update 2017
Format Factory is a multifunctional media converter and DVD ripper. Its features include:Bundleware
Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/
Freemake Video Converter is video converter that lets convert videos to avi, wmv, mp4 (iPhone, iPod, iPad, PSP, xBox), 3gp, rip dvd, extract mp3, burn DVD and Bluray, create photo slideshow and audio visualization, cut, join, rotate and upload videos, photos and music to YouTube.
The installer contains OpenCandy. Be careful during the installation: https://alternativeto.net/discussions/applications/11718/be-careful-in-the-installation/
Freemake Video Converter vs XRECODE opinions
Mainly is a video converter not audio converter
WinFF is a GUI frontend and batch parser for the command-line multimedia tool FFmpeg. WinFF works by making a batch file that runs in the command-line, designed to launch the command-line tool with given settings from a preset.
dBpoweramp contains a multitude of audio tools in one: CD Ripper, Music Converter, ID Tag Editor and Windows audio shell enhancements. Preloaded with mp3 & Wave codecs, practically every audio codec can be installed from Codec Central, as well as Utility Codecs (perform...
MediaCoder is a free universal batch media transcoder, which nicely integrates most popular audio/video codecs and tools into an all-in-one solution. With a flexible and extendable architecture, new codecs and tools are added in constantly as well as supports for new devices.
Free application that converts audio files to MP3, AAC, AC3, E-AC3, WMA, FLAC, M4A, OGG, Opus, WavPack, AIFF, MKA or WAV format. Moreover, the program allows extraction of audio tracks from video files without loss of sound quality.