I've tried GmailDrive, Xmailharddrive.com, and Gspace and
among these the later one, Gspace, a firfox extension written by Rahul Jonna was far better than others. its long list of features and its speed outweigh all its rivals in this field.
you can easily upload and download big executable files (bigger than 10 MB which is normally not allowed by google!) with high speed and without any problem. here are some of the key featurs:
- Files > 10 MB can be uploaded.
- Allows to upload and download files and folders.
- Every file is sent as an attachment.
- Allow to upload executable files.
- Allow to preview images before download.
- Allow so send files or folders directly to another email address of your own or a friend.