Software

You can backup files to "the cloud" and store them on-line, which makes the files accessible from other computers when you are travelling.

Files stored online can also be easily shared between a group of people.

Although the services listed on the right provide an automatic sync service for large files, the usefulness of this option depends on your available bandwidth.

MobileMe

If you use a Mac, this is a great service, providing not only iDisk file storage but also syncs bookmarks, contacts, calendars etc between desktops, laptops & iPhones. Includes 20Gb storage space.

UbuntuOne

Designed for automatic sync with Ubuntu OS, but can accessed by Mac & Win too. 2Gb space for free.

Mozy

2Gb online storage for free.

Backup Software

Carbon Copy Cloner
Create one-off bootable clones, or configure to create scheduled backups. Free.

CrashPlan
"Social backup" software - backs up your data locally and then sends a secure copy to trusted friends, family members or other computers (Mac or PC). Free version.

Déjà Vu
Clone your entire drive, or retrieve archived versions of your files.

iBackup
Configurable backup utility. Donationware.

SliverKeeper
LaCie software - free, but email address required to download.

SuperDuper

Polished cloning utility for scheduled bootable backups. Free for basic use.

Synk
Backup, Standard and Pro versions.

Time Machine

Apple's built-in data backup solution in Mac OS X 10.5.

WinClone
Clone your BootCamp partition.

Data Recovery

Cardraider
Rescue lost digital photos from your memory card.

Data Rescue

Commercial data recovery software.

FileSalvage

Undelete and recover lost data from your Mac HD.

ImageRecall

Digital photo media recovery software. Supports a wide range of formats.

PayAm

If you have important data to recover, don't risk messing with it yourself. Post your disk media to these guys in Sydney.

Stellar

Recovers data from damaged, deleted, or corrupted volumes and even from initialized disks.

Social Backup

A relatively recent idea, "social backup" software backs up your data to another computer - either on your local network, or remotely.

Diagnostic Software

DiskWarrior

Detects and repairs Mac OS X directory damage and corruption.

TechTool Pro

"A complete Macintosh repair shop in a box."

ProToGo
Create a bootable external HDD that contains Micromat's TechTool tools (see above) as well as any of your own utilities you may wish to install.

Backup Software

(Don't forget - for home use, the software that comes with your external HD is probably a good starting point.

Back2Zip
Constantly monitors your documents and makes sure that they are always properly backed up. Free.

BackupNow
Backup to Hard Drives, Flash Drives, CD, DVD or choose any attached drive letter.

Cobian
Schedule and backup your files and directories from their original location to other directories/drives in the same computer or other computer in your network.

Comodo
Includes complete file and folder duplication to local / network drives, FTP servers and CD/DVD re-writers; intelligent incremental backups. Free.

CrashPlan
"Social backup" software - backs up your data locally and then sends a secure copy to trusted friends, family members or other computers (Mac or PC). Free version.

Cucku Backup
"Social backup" software - backs up your data locally and then sends a secure copy to trusted friends, family members or other PCs. Free version.

DriveImage XML
Make an image of logical drives and partitions.

Genie-Soft
Home and Pro editions. Auto-backup facility. Free trial available.

Handy Backup
Simple though effective backup software.

Macrium Reflect

Imaging and restoration software for XP and Vista - free version. Simple interface. Great for taking a clone of your computer for later restoration. (See tutorials)

SyncBack
Schedule backups to an external HD, FTP server, network drive, etc. Free and Pro versions.

Data Recovery

BadCopy

Data recovery software for floppy disk, CD, DVD, memory card, Zip disk, flash drive and other storage media.

Digital Rescue
Preview deleted data before recovery.

ImageRecall
Digital photo media recovery software. Supports a wide range of formats.

Handy Recovery
Browse your disk for deleted files. Recovers files from a variety of HD, flash drive, etc.

PC Inspector
File recovery software. Free version available.

Recover My Files
Includes on the fly data preview. Free trial available.

Restoration
Restore accidentally deleted files. No installation required, so you don't risk overwriting the deleted files (runs from floppy/thumb drive).