Azure Archive Storage - Low cost, secure cloud storage for rarely accessed data.
GoGrid - Best of Cloud + Best of Hosting
Amazon Glacier - Amazon Glacier is a secure, durable, and extremely low-cost storage service for data archiving and long-term backup.
Amazon AWS - Amazon Web Services offers reliable, scalable, and inexpensive cloud computing services. Free to join, pay only for what you use.
Barracuda Email Protection - Barracuda Essentials offers advanced Office 365 security features including email scanning, archiving, backup & recovery, and real-time phishing defense.
Rackspace - More than 100,000 businesses trust Rackspace with their hosting and cloud computing. Get cloud, managed and hybrid hosting all backed by Fanatical Support.