1. Dropbox

Dropbox is so popular that we're wondering if people might soon refer to 'Dropboxing' for file-sharing/online storage in the same generic manner as 'Photoshopping' for image editing. You get 2GB for free and can share folders or links to specific files, such as archives. You can buy extra space, from $9.99 monthly for 100GB. Dropbox's widespread support (in terms of first-party and third-party apps) adds to its appeal.

Send big files share large files

2. Box