ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
UploadHouse - Thumbnail and resize your photos and images
ShareX - ShareX is a free and open source program that lets you capture or record any area of your screen...
Img.vision - Image hosting & video hosting for eCommerce sellers
LightShot - The fastest way to take a customizable screenshot.