Img.vision - Image hosting & video hosting for eCommerce sellers
Product School - The global leader in product management training
BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.
The Product Folks - A volunteer-led community of product managers and makers
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
Intercom on Product Management - The ultimate resource for aspiring product managers