Description: darktable is an open source photography workflow application and raw developer. It manages your digital negatives in a database, lets you view them through a zoomable lighttable, and enables you to develop raw images and enhance them.
Type: software
Pricing: Free
Description: Image Overlay Utility is a free program that allows you to overlay images on top of each other. It has basic features to resize, rotate, and position images for creating overlays.
Type: software
Pricing: Open Source