OggConvert is a free and open-source transcoder for digital audio and video files of various types into the free Ogg Vorbis audio format, and the Theora, VP8 and Dirac video formats. Developed by Tristan Brindle
License: Open Source
iWisoft Free Video Converter is a user-friendly tool for Windows that supports a wide variety of formats and includes a built-in video editor, making it great for casual users. OggConvert, being open-source, is lightweight and supports batch processing, making it ideal for users who need quick conversions, especially to Ogg format, but may lack some advanced features and support for certain formats.