DROPBOX [2GB Free]
It is the most well-known cloud service in addition to being presented as one of the best for data security. The defects of this service are the little memory made available with the free account: only 2GB.
ONEDRIVE [15GB free]
OneDrive (formerly known as SkyDrive) delivers a satisfactory online file storage and sharing solution in a free and easy to use service. It has a design that is both attractive and functional.
OneDrive lets you edit your Microsoft Office documents online, it offers a lite version of three of the major softwares of the suite Word, Excel, and PowerPoint, so if you don’t have the suite installed on your PC or Mac you can simply edit them online
GOOGLE DRIVE [15GB free]
Google Drive is a file storage and synchronization service which enables user cloud storage, file sharing and collaborative editing.
Google Drive incorporates the Google Docs suite, a collaborative office suite of productivity applications that offers: Google Docs (word processor)
Google Sheets (a spreadsheet application); Google Slides (presentation program); Google Drawings (a graphics application); Google Forms (a form designer)
MEGA (50GB free)
MEGA, the successor of Small MegaUpload iconMegaUpload , is a cloud storage and file hosting service produced by Mega Limited. This cloud-storage solution claims to protect your privacy with end-to-end encryption and offers a “Secure Collaboration” feature.
BOX (10GB free)
Box is a cloud storage service suitable mainly for business customers, offering a large number of customized plans with very advanced features and a large amount of GIGAbytes
You should have full control over your data. We help you achieve that: a safe home for all your data. Secure, under your control and developed in an open, transparent and trustworthy way. We are Nextcloud.
Nextcloud offers industry-leading on-premises file sync and online collaboration technology. Our expertise is in combining the convenience and ease of use of consumer-grade solutions like Dropbox and Google Drive with the security, privacy and control business needs.