Ubuntu One

CrashPlan lets you automatically back up your hard drive to another computer, for free. The paid version of CrashPlan offers secure cloud storage, in addition to local backups, and continuous, …

Windows Live Mesh service has been closed, the successor is https://suse.me/apps/skydrive. With Windows Live Mesh, you can synchronize files with all of your devices, up to 5GB for free. Access …

Get 5 GB of full featured Online Backup for free. Features include Automatic Backup, True Archiving, Versioning, Continuous Backup, Mapped Drive Backup and Web-based Backup Management. IDriveSync syncs files...

DropboxPortableAHK is a portable version of the Dropbox client using AutoHotKey. What it does: Provides Dropbox version 1.1.45 Makes it fully portable -> you do not have to install it …

Tarsnap is a secure online backup system for Linux, BSD, OS X, and other UNIX-like operating systems.

[Discontinued: http://web.archive.org/web/20130129104355/http://www.gfi.com/pages/backup-freeware.asp] GFI Backup will allow all home PC users to keep regular and updated copies of their precious memories...

fruux is a free service that takes care of your contacts, calendars and more so you don't have to. Never manually copy contacts and calenders between your devices again! fruux …

SafeCopy online backup providing one account for all your computers. Backup, Share and Access your files securely from anywhere: Mac, PC, secure web browser and iPhone. GOOD: 3Gb for free, …

Unlimited online storage for your photos, music, video, documents, and all other valuable files you have! Pre-made categories and our simple wizard make sure that all your important data gets …

Symform is a revolutionary cloud storage & backup service, providing up to 200GB free and unlimited online storage for a low flat fee.

Simple Backup for a complex digital world. Choose from Instant Backup and Premium Backup with more flexibility and Windows integration. Start protecting your files in less than 60 seconds.

With keepit.com you don't need to know what resolution your camera is and how much space you need. You have unlimited space. Keepit by default creates a backup every day. …

dvcs-autosync is a project to create an open source replacement for Dropbox/Wuala/Box.net/etc. based on distributed version control systems (DVCS). It offers nearly instantaneous mutual updates when a file is...

WinDataReflector is a lightweight file synchronization and backup tool that wraps up fast file comparison and transfer algorithms into a simple and clear interface that offers you visual comparison of …

Sync, back up, and restore aplication that also lets share documents and folders with people you previously selected. With WORKbox Sync you can sync files and folders between your pc …

Protect your customers critical data with automated backup control from LogMeIn Backup. Protect information on your computers with secure, remote backup to storage devices you control. Avoid relying on...

ZenOK offers 2GB of free online backup storage.