ownCloud is described as 'Self-hosted platform for secure file sync, sharing, calendar, and contact management with desktop, mobile, web access, and multi-device syncing' and is a leading Cloud Storage service in the backup & sync category. There are more than 100 alternatives to ownCloud for a variety of platforms, including Web-based, Windows, Mac, Linux and Android apps. The best ownCloud alternative is Nextcloud, which is both free and Open Source. Other great apps like ownCloud are Google Drive, Dropbox, MEGA and Filen.
Fast and very secure digital asset management platform with a user-friendly interface. Allows you to customize download links with your brand's style and logo. Controlled access to all your digital files-anytime, anywhere,on any device and more.
On-premises solution offering file sync, universal data access and collaboration through Nextcloud Files, Talk, and Groupware. Ensures secure, controlled data storage for enterprise with powerful privacy tools including encryption, fine-grained access, and a bug bounty.
A file storage and synchronization service integrated with Google Docs suite, enabling seamless collaboration across devices. Offers scalable storage, real-time updates, offline access, and extensive sharing options across Mac, PC, and mobiles.
Synchronize and access files across multiple devices with secure cloud storage. Features include 2GB free storage, two-factor authentication, selective sync, offline access, shared folders, and built-in viewer, supporting various platforms and languages.
This cloud-storage service offers end-to-end encryption, selective synchronization, and shared folders without ads. Supports offline access, two-factor authentication, encrypted backup, a command-line interface, and dark mode for comfortable use.
Filen is a cutting-edge cloud storage provider that offers client-side, end-to-end, zero-knowledge encryption. Headquartered and operated entirely in Germany, Filen is at the forefront of combining comprehensive features with uncompromising privacy and security.
Offering comprehensive privacy with end-to-end encryption, Proton Drive allows users to store, synchronize, and share files across various devices through web, desktop, and mobile apps. Free storage up to 5 GB, service remains open-source and audited, ensuring file content and access control.
Manage and share files securely across devices with OneDrive. It offers 5 GB free storage, direct Office integration, automatic backups, and file sync for seamless collaboration. Ideal for personal and business use with advanced data protection tools.
Open source cloud platform for organizations with self-hosting, device file synchronization, sharing, versioning, secure encrypted storage, admin controls, web access, audit logging, and support for desktop and mobile clients for secure collaboration.
YunoHost is a Debian GNU/Linux based distribution packaged with free software that automates the installation of a personal web server. The purpose of YunoHost is to allow users to easily host their own web services by enabling a simple point-and-click web interface for...
Resilio Sync allows you to automatically sync files between computers via secure, distributed technology (P2P bittorrent protocol).
End-to-end encrypted cloud storage with quantum-resistant cryptography protects files from all third-party access, including service providers, ensuring strict confidentiality for individuals and businesses, seamless web and mobile access, and compliance with EU data laws.
kDrive is a Swiss online storage service that respects its users' privacy and makes storing, sharing & collaborating on files a breeze.
Switzerland
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It’s a community-fork of ownCloud with all components being open source. :)