Macsome Audiobook Converter - Convert Audible Audiobook to MP3 / AAC at up to 300x faster speed and id3 tags kept.
Audible - Audible is the world’s largest provider of premium audiobooks and spoken word content.
TunePat Any Audiobook Converter - TunePat Any Audiobook Converter is an excellent Audible audiobook downloader designed for downloading and converting audiobooks in AA & AAX format from Audible to M4A/M4B/MP3 format.
LibriVox - free public domain audiobooks
Voice - Convert texts to audio files easily... Write your text, click export.
LearnOutLoud.com - LearnOutLoud.com is the web's largest resource for audio & video learning.