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 Dropbox, Google Drive, MEGA and Filen.
Syncany is an open-source cloud storage and filesharing application. It allows users to backup and share certain folders of their workstations using any kind of storage, e.g. FTP, Amazon S3 or Google Storage.
"The core team of Syncany is on hiatus for an indefinite amount of time." See https://github.com/syncany/syncany
e2ee-cloud is a open source, self-hosted, end-to-end encryption software. You can upload and download files in your browser. All files and folders will be encrypted before upload and decrypted after download.
CloudMe is a free and open service to sync, store and make all your files available in the cloud through an easy to use Blue Folder.
Astian Cloud is a secure and private storage alternative where users can store their information, share files, edit files, video conferences and much more.
Open-source cloud storage solution built on TypeScript, Deno, and Fresh, offering a minimal, user-friendly interface, WebDAV file access, easy sharing, modular architecture, and integration with existing clients, designed for privacy and flexible self-hosting.
OwnDrive is a security and privacy oriented cloud storage service that gives access to people’s data anywhere, anytime and from any device. OwnDrive makes storing, syncing and sharing of data easy. Our users have the ability to store, sync and share files, contacts, calendars...
Kiteworks Secure File Sharing is a software offering a platform for secure collaboration, virtual data rooms, managed file transfer, and SFTP.
vBoxxCloud is a GDPR Ready cloud solution help you store, edit and share files online and keeps your information private in the Netherlands. As a Cloud solution designed for businesses, it provides a robust central dashboard where you can manage users, organization and control...
FileRun is a full featured PHP web based file manager with a very easy to use user interface.
Tahoe-LAFS (Tahoe Least-Authority Filesystem) is a Free and Open cloud storage system. It distributes your data across multiple servers. Even if some of the servers fail or are taken over by an attacker, the entire filesystem continues to function correctly, including...
With Memotoo, sync all you want !
Sync and share your personal datas (bookmarks, address book, calendar, files, ...) with Memotoo.com to find them from any computer connected to Internet.
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OwnCloud is groupware. Syncany is a file-sync storage solution. Just because they have overlapping functionality, does NOT make them interchangeable.