The Image Collector

The Image Collector (referred to as TIC) is an application that has been designed to allow the quick viewing, categorization, and downloading of images from a range of web services.
TIC allows you to choose the web service you would like to download from, fetches the latest available images and displays their thumbnails in a scrollable grid. You can then left-click an image to download and display its full version; if you want to keep that image, middle-click on it and it will be downloaded to the selected category.

Categories point to a location on disk, so you can activate a category and download an image, and it´ll be automatically placed into that category´s location. This, combined with queued downloading, allows images to be downloaded and categorized very quickly. There is no need to wait for images to complete downloading before viewing and downloading more.