I'm looking for an application (windows or maybe web) that can be used to combine images vertically and horizontally. I usually go with PhotoScape (screenshot) to for this but that's not free nor updated anymore. Important features for me are to be able to combine horizontally or vertically, set the number or rows or columns and have the ability to resize the final image.
I use Photopea for this. It's a free Photoshop clone on the web so it's not quite as simple, but stacking photos and resizing the canvas is easy when you get used to it.