Giphy Chrome Extension - Respond to emails, tweets & more w/ GIFs in a jiffy
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
PopKey for Desktop - Quickly share ridiculous GIFs from Mac or Windows
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Vlipsy - Easily add your favorite video clips to any conversation.
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.