Top Alternatives to Nextcloud

Dropbox is an easy to use freemium cloud storage solution. It has a client sync utility for multiple platforms.

Google drive is Google's cloud storage solution for storing files in the cloud.

ownCloud is a free and opensource file sync and share app which is self hosted.

Microsoft OneDrive is a cloud-based storage solution from Microsoft.

MEGA is the cloud-based file hosting solution.

Box is an online file sharing and content management service.

MediaFire is a file hosting, file synchronization, and cloud storage service.

Syncthing replaces proprietary sync and cloud services with something open, trustworthy and decentralized.

Seafile is a file-hosting software system. Files are stored on a central server and can be synchronized with personal computers and mobile devices through apps. Files on the Seafile server can also be accessed directly via the servers web interface.

FileCloud is a file sharing, backup, and remote management solution.

Pydio, formerly known as AjaXplorer, is an open-source file-sharing and synchronisation software that runs on the user's own server.

iCloud is a cloud storage and cloud computing service.

Syncany is a cloud storage and filesharing application with a focus on security and abstraction of storage.

Tresorit is an online cloud storage service based in Switzerland and Hungary that emphasizes enhanced security and data encryption for Businesses.

pCloud provides a cloud storage solution for businesses of any size.

Librevault is an Open source zero-knowledge peer-2-peer file sync designed with privacy in mind.

Microsoft SharePoint is a browser-based collaboration and document management platform.

Icedrive is a cloud storage provider with inbuilt encryption to data in cloud.