Optimage - Advanced image optimization tool
Ralpha Image Resizer - High-speed image batch conversion tool
Crunch - Crunch is a No Judgment Gym that believes in making serious exercise fun by fusing fitness and entertainment. Join Crunch for all your fitness needs!
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
ImageKit.io - Instant multi-platform image optimization
Caesium Image Compressor - Compress your pictures up to 90% without visible quality loss.