I think you'll find that any backup product that's aiming at the enterprise, will offer server-free backup. If a vendor doesn't offer server-free backup they either aren't aiming at the enterprise or they aren't doing it very well. So, if you are the type of company that wants server-free backup, then you should look at an enterprise backup product.
By submitting your personal information, you agree that TechTarget and its partners may contact you regarding relevant content, products and special offers.
Check out the entire Server-free Backup FAQ.