DownAlbum - Download Facebook, Instagram, Pinterest, Twitter, Ask.fm, Weibo Album.
PicBackMan - PicBackMan is an effortless photo & video uploader for Flickr, Picasa, SmugMug, Facebook, Dropbox, Box, Skydrive & Google Drive.
55Photos - 55Photos is a web application that lets you view, edit, manage, organize, transfer, download, upload, backup all your online photos and albums from one place.
Flickr Fast Downloader - Flickr Fast Downloade is a Windows application to download photos and videos . Features:
Pixaver - Pixaver automagically backs up your Google Photos library, giving you some extra peace-of-mind.
Tool for Google Photos - This app helps you manage your Google Photos, Picasa Web Albums.