Why Pay when you can get them for free? Yes they are totally free to use but there are some limits, check out the list below, most of them are paid services but offers free option with limited space or features.

• ADrive’s Basic plan offers individual users 50GB of online storage and backup for all file types including access to our basic service features, all for FREE.

• SkyDrive : 25 GB of free storage on Windows Live, The service currently offers 25 GB of free personal storage, with individual files limited to 50 MB.

• Humyo : 10 GB Free Online Storage. humyo.com is an online file storage service which synchronizes files across multiple computers and a remote data store.

• Mozy: Up to 2GB free storage. Requires a free download of the Mozy software; this helps you figure out which files to back up.

• Omemo: Works as a peer to peer network to create an immense virtual hard drive.

• Box: Up to 1 GB free storage; pricing plans available.

• DropBoks: Incredibly easy and simple to use – can upload up to 1 GB of your files here.

• MediaFire: Probably one of the best free online storage sites out there. Not only can you upload files here, but they give you lots of extra options (MySpace help, folders, galleries, etc.).

• in.solit.us: Requires free registration; lots of online storage plus neat features such as public file sharing.
• divShare: Upload all kinds of files here, including multimedia. Includes integration with Facebook and WordPress.
• Omnidrive: Up to 1 GB free online storage; integrates with Zoho and Snipshot.
• Yuntaa: Free up to 1 GB; also offers blogging.
• YouSendIt: Need to send a really big file? Use YouSendIt to send files up to 2 GB.
• MediaMax: Up to 25 GBs completely free; this includes video hosting as well.
• Senduit: Need to share a large file with someone? Try Senduit – just upload your file, share a secure URL, and you’re all set.
• Megashares: Up to 10GB available for upload storage; you get a URL where your files can either be privately or publicly accessed.
• Badongo: Free file hosting that allows you unlimited files, photos, etc. to share.
• Up-File: Unlimited file size; you can upload pretty much anything here to share with others.
• eSnips : 5GB of free space
• IDrive : Get 2 GB backup space absolutely free without any catch. Store your photos, media files or other important documents
• freevirtualservers : 1GB Free Online storage