All the Free Space: Free online file storage directory of more than 50 virtual disk space / file storage and sharing providers with detailed descriptions.
DriveSeek.com: Searchable online guide to free internet storage drives, photo albums, email attachments and mp3 servers.
Free Virtual Disk Drives and File Storage Services: Capacity, capabilities and restrictions for various free storage services.
Prospector: Free Storage Space: List of reviewed free online storage services.
Web-Based File Storage Services: A list of free services.