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