Apps similar to Synology C2 include Nextcloud, which is free and open source. Other options are Dropbox, Syncthing, Google Drive and MEGA. There's no shortage of Cloud Storage Services like Synology C2, with more than 100 alternatives for Windows, the web, Mac, iPhone and Linux.
Sync-in is a sovereign, open-source platform for file storage, sharing, synchronization, and collaboration. It is intended for individuals, businesses, public-sector entities, and institutions seeking a controlled, scalable solution suited to their operational requirements.
France
EU
IPFS is a global, versioned, peer-to-peer filesystem. It combines ideas from Git, BitTorrent, Kademlia, SFS, and the web. It is like a single bittorrent swarm, exchanging git objects. IPFS provides an interface as simple as the HTTP web, but with permanence built in.
United States
MediaFire is the simple solution for uploading and downloading files on the internet. It focuses on providing a positive experience for downloaders, but does not offer an affiliate program for uploaders.
United States
End-to-end encrypted file synchronization and sharing on desktop and mobile, featuring admin controls, auditing, link-based sharing, two-factor authentication, offline access, granular permission management, and protection for sensitive workplace documents.
Switzerland
SpiderOak provides an easy, secure and consolidated online backup, storage, access, sharing & sync tool for Windows, macOS, and Linux (Ubuntu, Debian & Fedora). SpiderOak offers a different approach to online backup, synchronization, and sharing.
United States
Cozy makes the personal cloud more accessible. Respectful of the user's privacy, Cozy simplifies daily tasks: synchronize and backup photos, automate bills downloading, manage expenses, etc. Flexible and easy to use, their Open Source platform allows users to create and...
FranceEU
Open source, self-hosted suite featuring mail, calendar, drive, and contacts. Provides privacy without analytics or ads, file versioning, sharing, recurring calendar events, and compatibility with open standards, keeping control and portability with the user.
Yandex Disk is a free cloud storage service that gives you access to your photos, videos and documents from any internet-enabled device. Download the app to your phone or tablet and you'll literally be able to carry your files with you everywhere.
Russia
Icedrive is a cloud storage, backup and file sharing service with browser, desktop and mobile apps.
The Icedrive desktop application allows users to mount their cloud storage space as a real hard drive.
United Kingdom
Pydio is the mature alternative to Dropbox and Box.com, to build your own box, on your own servers.
FranceEU
4Shared is a large online storage facility where Internet users store their text, audio, video, photo, and other files and share them, if they wish, with other people. It is easy, handy, and free! 15GB storage for the free account.
United States
SyncTrayzor is a wrapper for Syncthing which allows Syncthing's window to be hidden in the tray area. SyncTrayzor has a built-in web browser to manage Syncthing without opening your browser. SyncTrayzor can be configured to automatically start at PC startup.
