Dropbox is easy to use, so if you’re new to online file storage, this is a great place to start. The file management is intuitive, and all the apps (including the browser client) are built around a minimalistic theme that offers the same fluid experience on all major operating systems and devices — which is something we can’t say about all of its competitors. Whether you’re on an iPhone or a Galaxy, the operating system integration is tight, and you’ll feel right at home.
European cloud storage company Tresorit gained recognition with its hacking contest a few years back, offering $50,000 to anyone who could hack into its servers. Tresorit claims no one succeeded. Clearly, the company is going after the security-conscious, promising end-to-end encrypted file sharing and syncing, HIPAA and GDPR compliance, the protection of Swiss privacy laws, and other security measures.
A simple, scalable, elastic file system for Linux-based workloads for use with AWS Cloud services and on-premises resources. It is built to scale on demand to petabytes without disrupting applications, growing and shrinking automatically as you add and remove files, so your applications have the storage they need – when they need it. Amazon Elastic File System
Amazon FSx uses SSD storage to provide the fast performance your Windows applications and users expect, with high levels of throughput and IOPS, and consistent sub-millisecond latencies. This compatibility and performance is particularly important when moving workloads that require Windows shared file storage, like CRM, ERP, and .NET applications, as well as home directories.
Sharing data using an off-premises storage and transfer tool is convenient, easy to use, and fast. Just drop your files into a folder on your desktop, and those files magically appear in your "cloud" account, available to anyone with whom you've shared it. Those with whom you are sharing need only a web browser to access the files—no matter which operating system they are using. This user-driven file collaboration is great for sharing innocuous files, such as JPGs that a soccer mom wants to share with the other moms.
There are many other reasons to pay for cloud storage, from getting a lot more space (a terabyte really doesn't cost all that much anymore) to being able to upload really big files. That last benefit is relevant to graphic designers, video editors, and other visual artists who often host enormous files. Other perks of paying for your cloud storage often include increased access to file-version history (meaning you can restore an important business proposal to the version you had before your colleague made a bunch of erroneous changes), more security, or more features for collaboration and working with teams.
ZumoDrive works with Windows, Mac, Linux, iPhone, Android, and Palm Pre and seems to be making a lot of people happy. Designed to give you access to all your files — music, documents, videos, photos, and more — wherever you are and no matter what device or platform you're using, ZumoDrive's tag line is "cloud storage that appears local." ZumoDrive gives you 1GB of free storage. You can also choose a for-fee subscription plan that works for you —ranging from 10GB for $2.99/month all the way up to 500GB for $79.99/month.

Keep your password secure. Change your password regularly and don't use the same password across multiple websites. If hackers crack one password it's a pain, but if they access all your online accounts it can be a nightmare. As many sites use your email as a login ID, using the same password increases your security risk (see 60 seconds on password security for more info).

The TLS protocol prevents man-in-the-middle attacks from succeeding, while encryption secures your data in transit and at rest. Private encryption prevents anyone other than you from reading your files. The drawback is that services which provide it won’t be able to reset your password if you forget it. To avoid losing access to your content use a password manager.