youconvertit

youconvertit is like a four-in-one. With this fabulous tool you can convert files to/from a lot of different formats, convert video files directly from the web (the final result will be sent to your e-mail box), convert units of all kinds (area, electricity, energy, width, pressure, speed and a lot more), and share big files by e-mail.

HiperLink: http://youconvertit.com/

DropSend

DropSend allows you to send files of up to 1GB to your friends and family. With the Basic (free) package you can send 5 files per month for free.

HiperLink: http://www.dropsend.com/

YouSendIt

YouSendIt allows you to transfer large files (100MB) over the web for free. If the file you want to send is too big for your receivers e-mail inbox, YouSendIt takes care of it.

HiperLink: http://www.yousendit.com/