Img.vision - Image hosting & video hosting for eCommerce sellers
Tripadvisor - The Tripadvisor mobile app is available for the Android and iOS platforms. It can be used to create reviews of hotels, restaurants, and to chat with other travelers on Tripadvisor forums.
UploadHouse - Thumbnail and resize your photos and images
Wikivoyage - the free worldwide travel guide that anyone can edit.
BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.
The Basetrip - Cities - Travel information for 650+ cities & 230+ countries