One of the best photo collage software for Windows PC. Pic Collage- Best Photo Collage Apps ( Windows PC ) Best Photo Collage Apps For Windows PC & Mac OS 1. These apps have lots of pre loaded collage templates, photo frames and stickers. If you are looking for photo collage maker software for your laptop or desktop, these apps may be useful for your computer. In this page, you can see 5 best photo collage maker apps for Windows PC & Mac OS.