DriveSeek.com
Searchable online guide to free internet storage drives, photo albums, email attachments and mp3 servers.

Prospector: Free Storage Space
List of reviewed free online storage services.

All the Free Space
Free online file storage directory of more than 50 virtual disk space / file storage and sharing providers with detailed descriptions.

Web-Based File Storage Services
A list of free services.

Free Virtual Disk Drives and File Storage Services
Capacity, capabilities and restrictions for various free storage services.