CloudSight - Image recognition API; send an HTTP request with an image, get a description of contents.

ColouriseSG - Deep learning colouriser prototype made for old Singaporean photos.

Dashmote - Dashmote bundles stock image providers to make finding stock images as easy as possible.

Image Colorizer - Colorize black and white images automatically

YOLO - Real-time object detection

Colorize It - Use deep learning to colorize black and white photos