Mega - Secure File Storage and collaboration
Greenshot - Greenshot is a free and open source screenshot tool that allows annotation and highlighting using the built-in image editor.
Dropbox - Online Sync and File Sharing
Shutter - Shutter is a feature-rich screenshot program.
MediaFire - MediaFire is the simple solution for uploading and downloading files on the internet.
Snipping Tool - Use Snipping Tool to capture a screen shot, or snip, of any object on your screen, and then annotate, save, or share the image