Nextcloud is described as 'On-premises file sync, universal access, integrated collaboration, real-time communication with privacy and data control focus' and is a leading Cloud Storage service in the office & productivity category. There are more than 100 alternatives to Nextcloud for a variety of platforms, including Web-based, Windows, Android, iPhone and Linux apps. The best Nextcloud alternative is ownCloud, which is both free and Open Source. Other great apps like Nextcloud are Dropbox, Google Drive, MEGA and Seafile.
A secure and ephemeral way to transmit sensitive information to anyone. Sends can include plaintext or file attachments up to 100 MB.
DRACOON is a highly secure enterprise filesharing platform, which combines a broad array of application fields ranging from data exchange workflow-integrations, over secure mailing services and the complete modernization of file services.
Secure, end-to-end encrypted, and privacy respecting sync for your contacts, calendars and tasks. Everything is encrypted on the client-side and all the code (client and server) is open source.
Cloud storage and synchronisation service provider with incremental synchronisation technology, with fast synchronisation and all-platform support.
Make your cloud storage beautiful. Playbook declutters, auto-tags, and intelligently organizes your creative work. Seamlessly browse, collaborate on, and share what you need with friends, colleagues, clients—or the whole world!
Storro is a peer-to-peer, private blockchain application to store, share and sync your business files. It offers unprecedented security and privacy by automatically encrypting your data (client side), cutting it into small pieces and storing those spread out over the devices of...
Your files in your cloud on your rules. Aurora Files is an open-source file storage platform for small teams and personal users.
Synology C2 synchronizes data across all your devices, such as computers, mobile devices, or other Synology NAS. Build a private cloud and ensure files are readily available when and where you need them.
The Amahi Home Server is designed for home and small office environments where the technical support staff do not want the job!
A private, end-to-end encrypted photo and video storage service based in the EU. It lets you back up, organize, and share memories securely, with original quality, no ads, and zero data mining.
OpenPaaS is an open, modern and business-oriented collaboration platform. Gorgeous on any devices, it ships with incredibly useful web applications, including a mail, a calendar and a contact app.
Parsec is a free software (AGPL v3) aiming at easily share your work and data in the cloud in total privacy thanks to cryptographic security.
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client-side encryption enables on-premises security with cloud delivery.