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.
Ralpha Image Resizer - High-speed image batch conversion tool
WindowGrid - Quickly and easily layout windows on a dynamic grid using just the mouse.
Batch Image Resizer - Resize, crop, shrink, flip, exif-rotate, convert, enhance, process multiple pictures and photos with professional software! 120+ Actions, 30+ Image Formats