SurDoc is online backups you can trust.
Continuously backs up your files whenever you’re connected to the Internet. (No risk of losing files that may occur with other services that only back up daily or monthly.)
SurDoc is already the most generous premium backup provider on the market, offering a 10GB plan completely free, and a 100GB plan for less than $3/month. Now users can get even more storage for free!
You can earn up to 20GB of bonus free storage (for a total of 30GB free storage) by sharing SurDoc with friends and family. For each person you refer, you’ll get 1GB of additional storage, up to 20GB. Absolutely free. Forever!