This is one of the first cloud storage services. Apart from OS X, Windows (including Windows phone), Android and iOS, Dropbox client applications are available for Linux ad Blackberry.
Free Dropbox upload is limited to 2 GB of storage, and the service offers you a number of options to increase it – invite a friend, set up a mailbox, take a tour of the Dropbox basics, enable camera upload feature, etc.
Basic account does not allow you to make changes in permissions in Dropbox shared folder, while for Dropbox Business the conditions are different. As for security – there is a two-step authentication; and the service employs AES 256-bit encryption to protect your data.
OneDrive app is built in Windows 8 and 10, and there is OneDrive for business Mac owners could make use of. The amount of storage it offered initially was mind-blowing, but since last year Microsoft has cut it dramatically. Now you can keep upto 5 GB data for free, while for Office 365 subscribers it is 1 TB.
Sharing files is easy; OneDrive client for web has links to a number of social networks, and you can setup individual permissions for each user. Windows leaves a right to scan your data to prevent storage of any inappropriate content, which some users might find a bit too intrusive.
If you have a Gmail or YouTube account, you are provided 15 GB of free storage space on Google Drive. Be aware though that it includes large attachments you send via Gmail and photos taken on your phone if you chose to back them up on Google Plus. Songs kept on Google Music are counted separately.
Google Docs app is the answer to your ‘How to share files on Google Drive’ question, the app allows effective collaboration on the documents. Your data is protected by 128-bit AES encryption and Google does not check your content unless the laws require it.
This service is meant mainly for photos and videos backup and has 5 GB of free storage, excluding data stored on Cloud Player. Amazon Cloud does not offer much for working with documents, and as of now it is the biggest drawback of the service.
Now let us have a look at how you can manage data stored on these services. All of them have a web-interface and a local folder linked to a duplicate cloud version. If you upload data online in order to free space on your hard drive, this won’t really work for you. That is why we suggest trying CloudMounter by Eltima Software that allows you to mount cloud storage as local drive on your Mac. You can view online data as if it were stored locally, although in reality it does not occupy a single KB of your Mac’s hard drive. Files get downloaded locally only when you choose to open them.