DeOldify - Open-source deep learning project for colorizing and restoring old images
Colorscape - Turn your photos into coloring pages
CODIJY Pro Photo Colorization - Add colors to black & white photos and recolor images with surprizing ease!
Pigment by ShapeFactory - A unique way to explore color using lighting and pigment
AKVIS Coloriage - AKVIS Coloriage manipulates colors of an image: from colorizing old black and white photos from your family archive to replacing colors in your color photos.
Color by Disney - Coloring pages for adults featuring the magic of Disney