TL:DR; A simple, easy to use program to merge two pictures into a third one, with a degree of transparency chosen by the user.
Download STG Picture Merge Freeware - Rating: 4.05
ReaGallery Pro is very easy-to-use software to create web photo albums, thumbnail galleries and web slide shows with your images. It takes your pictures, edits them, automatically creates album pages and loads them to the web.
Cartoonist is an easy-to-use image editing tool letting you create funny caricatures applying special warp effects. Make the best use of your creativity or just relieve stress by warping images of your friends and celebrities!
Citra FX is a photo filter effects for digital photos or images. It allows anyone, regardless of experience, to turn digital images into unique artistic looks.