Rectangle - Window management app based on Spectacle, written in Swift.
ImBatch - ImBatch is a batch image processor with a nice graphical user interface.
AquaSnap - Too many windows on your screen? Stop wasting your productivity.
DVDVideoSoft Image Convert and Resize - Free Image Convert and Resize is a compact yet powerful program for batch mode image processing.
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
Ralpha Image Resizer - High-speed image batch conversion tool