ShareTube - Watch YouTube, synced with friends.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
&chill - Watch YouTube & Twitch videos with people online
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
PhotoStructure - PhotoStructure is a complete photo and video management application designed for the whole family.
Ralpha Image Resizer - High-speed image batch conversion tool