Google Drive

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Icedrive

iCloud is a cloud storage service provided by Apple, the service is provided freemium to all owners of Apple devices like iPone, iPad and Mac's. With iCloud users can store and acces their photos, videos, documents, notes, contacts, and more.

Store your files in the cloud with Dropbox and use them across all your devices or share them with friends. Dropbox is a cloud backup services that can be used to store your files online in a secure fashion. With Dropbox you receive 2GB of free storage space when your register, you also get 500MB extra storage for every friend you refer. If you want more you have to opt for a paid subscription.

A cloud synchronization service for sharing files across computers and other devices. SugarSync allows you to backup, access, sync, and share files across variety of operating systems, such as Android, iOS, Mac OS X, and Windows devices. SugarSync also support Linux through third-party clients.

With Nextcloud, users can host their own secure cloud solution for file storage, collaboration and communication for enterprise or personal purposes. Nextcloud gives you full control over your own data and where and how you host it. The software can be hosted on-premise or on any VPS or cloud instance provided by third-party web hosts. If you value privacy and security, Nextcloud might be the right choice for you. Nextcloud is both free and open source and developed in an open, transparent and trustworthy manner.

Resilio Sync is a proprietary peer-to-peer file and folder syncing solution for homes and businesses. The software can be used for sharing files or syncing and transferring enterprise data securley. The peer-to-peer protocol can be accessed with clients available for Android, Amazon Kindle Fire, BSD, iOS, macOS, Linux, Windows and Windows Phone.

With ownCloud, organizations can collaborate and be more production on their own secure enterprise file sharing (EFSS) platform. The ownCloud platform is self-hosted and allow for secure file sharing within an organization. The platform can be hosted on premise or on a cloud instance, controlled by the organization. The software is written in PHP and Javascript and is fully open source, released under the AGPLv3 license. ownCloud can run on most server hardware and operating systems, and the client for accessing ownCloud is available for Android, iOS, macOS, Linux and Windows.