Trace by Sticker Mule - Remove the background from any image for free
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
Icons8 Background Remover - Quickly remove the background from any photo
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
Removal.ai - Create transparent background for any image using Removal.ai - The fastest, easy-to-use & free tool to automatically remove backgrounds online.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats