CONV. - Convert YouTube video to MP3, GIF or MP4
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Downie - Video download for OS X. Downie supports at this moment over 1,000 different sites.
Ralpha Image Resizer - High-speed image batch conversion tool
Yout - YouTube to Mp3 Converter
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.