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.
Dropbox - Online Sync and File Sharing
Sketch - Professional digital design for Mac.
Google Drive - Access and sync your files anywhere
Inkscape - Inkscape is a free, open source professional vector graphics editor for Windows, Mac OS X and Linux.
Mega - Secure File Storage and collaboration
Adobe Photoshop - Adobe Photoshop is a webtop application for editing images and photos online.