For hosting common files it's ok. Also it is on Android too do, great to transfer files between your Windows and your phone. But if you want better security you have to subscribe a monthly offer.
NeoDownloader - As you know, there is a lot of websites with a lot of pictures, music and movies.
Dropbox - Online Sync and File Sharing
Vov Picture Downloader - Download pictures from websites.
Google Drive - Access and sync your files anywhere
Bulk Image Downloader - With Bulk Image Downloader you can download full sized images from almost any web gallery.
Mega - Secure File Storage and collaboration