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Filestash is a free and open-source Dropbox-like file manager that can be used to manage data anywhere. Filestash allows you to bring your own backend or create your own by implementing a simple interface. Currently, Filestash works with Amazon S3, SFTP, FTP, FTPS, Minio, Backblaze, GIT, Github, Gitlab, WebDav, LDAP, CalDAV, CardDAV, Mysql, Dropbox, Google, Drive Gogs Gitea. Through Filestash intuitive interface you can manage photos and files and easily share then with friends and family via regular links or social accounts.

Sia is a decentralized storage platform secured by blockchain technology. The Sia Storage Platform leverages underutilized hard drive capacity around the world to create a decentralized data storage marketplace that is more reliable and lower cost than traditional cloud storage providers. With Sia you can store files in the decentralized cloud without signup requirements, servers and trusted third-party providers. On average, Sia's decentralized cloud storage costs 90% less than incumbent cloud storage providers. Storing 1TB of files on Sia costs about $1-2 per month, compared with $23 on Amazon S3.

Syncthing is a free and open-source continuous file synchronisation software that utilise peer-to-peer technology. The software allows users to send files between two or more computers in real time, safely protected from prying eyes. Syncthing is available for Windows, Mac, Linux, Android, Solaris, and BSD.

With MediaFire you can store photos, documents, music, and video and share with others anywhere you go. MediaFire is a free file hosting, file synchronization, and cloud storage service with over 45 million registered users world-wide. MediaFire is primarly accessable over the web, but also has native clients for Android, Blackberry, iOS, macOS, Linux and Windows.

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.

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.