Imgur's Video to GIF - Make a GIF from hundreds of video sites
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
GIFMaker for Mac - GIFMaker – Created a GIF from a video or Images is the easiest way to create an animated GIF on your Mac.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
GifRun - GifRun provides easiest way to find and create animated GIFs from YouTube, Video, Images or Vine...
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.