PhotoStock is a tool for uploading photos to the PhotoStockPlus service. It is a fast and reliable way of uploading thousands of photos at a time. It supports several upload modes (full or previewed photos upload, fast thumbnails generation and upload) as well as all the PhotoStockPlus service features such as grouping pictures into albums. Another noteworthy feature of PhotoStock is the autoupload option, which works in the background. The user can choose a folder which is scanned by the application, and whenever they put new photos, they are instantly added and uploaded to a prepicked album. Both Windows and Mac OS are equally supported.