Img.vision - Image hosting & video hosting for eCommerce sellers
AmzScope - Find profitable products for sale on Amazon in one click, relying on statistics instead of intuition
UploadHouse - Thumbnail and resize your photos and images
Jungle Scout - Amazon product research made easy.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
AMZScout - AMZScout extension will help you make a decision about picking a niche based on the actual data, not intuition.