ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Magic Playlist - Get the playlist of your dreams based on a song
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Spotalike - Spotify playlist with similar songs, according to Last.fm
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats
Playlist Machinery - Tools that help you create & organize your Spotify playlists