Img.vision - Image hosting & video hosting for eCommerce sellers
Software Product Management Stack - Resources & tools to help you manage your software product
UploadHouse - Thumbnail and resize your photos and images
The Product Management guide - A book on how to create and ship products that people love
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
Product Management Exercises - A repository of product manager job interview exercises