iBackup

iBackup is a great Mac solution for backing up files to an external hard drive, or to Dropbox. Used in conjunction with Time Machine, it offers complete peice of mind.

Download it HERE

Synctoy - Free Backup Software for Windows

Synctoy is free backup software for windows.

You can setup folder pairs to copy the contents of on folder to another.
An example would be to setup your 'My Documents' folder, and copy it to a folder on an external drive.

Not only do I use it to copy important files to my DropBox folder, I use the windows scheduler to automatically run the software and copy all folder pairs at midnight.

I use this path as a guide to run All folder pairs in scheduler.
"C:\Documents and Settings\[WINDOWS USER]\Local Settings\Application Data\SyncToy\SyncToy.exe" -R

You may need to to identify where synctoy is installed, and add the "-R" switch to the end of the command line.

Download it HERE

Drop Box

DropBox is a great way to backup important files. Once installed, you simply drag your files to your dropbox folder. You can access your files via a web interface, or by installing DropBox on other machines.

DropBox gives you 2 gigabytes FREE storage. You can pay for more storage as required.

Check it oou HERE