Best Syncthing Alternatives: For Secure peer-to-peer file synchronization in 2025
In our digital lives, keeping files synced across devices—safely and privately—is more important than ever. Syncthing has become a trusted tool for secure peer-to-peer file synchronization, offering decentralized data transfer with no central server. But whether you’re seeking extra features, a different user interface, or compatibility with unique systems, there are plenty of Syncthing alternatives you can explore in 2025.
We’ve gathered 10+ of the best alternatives to Syncthing. Each is designed for secure, efficient, and private file synchronization. Whether you’re syncing work documents, photos, or backing up family videos, this list covers a range of needs and platforms. Let’s dive in!
Top 10+ Syncthing Alternatives and Best for Secure Peer-to-Peer File Synchronization
1. Resilio Sync
Formerly known as BitTorrent Sync, Resilio Sync uses peer-to-peer technology to move files directly between devices. It’s fast, works on almost every platform, and focuses on privacy—files are never stored on third-party servers.
- End-to-end encrypted transfers
- Works on Windows, macOS, Linux, iOS, Android, FreeBSD, and more
- No cloud storage—data stays on your devices
- Can handle very large files and folders
2. Nextcloud
Nextcloud is more than just file sync—it’s a full personal cloud platform you can run on your own server. With tons of add-ons and a strong focus on data privacy, it’s excellent for those wanting more than just simple file transfers.
- Self-hosted and open source
- File sharing, collaborative editing, calendar, and more
- Supports encryption and granular access control
- Mobile and desktop apps available
3. Synology Drive
If you own a Synology NAS, Synology Drive transforms it into a powerful private cloud with robust file synchronization across devices and advanced sharing features.
- Private cloud syncing with version history
- Multi-device file access
- Offline editing and collaboration
- Automatic backup and file recovery
4. IPFS (InterPlanetary File System)
IPFS is a distributed protocol designed to make the web faster, safer, and more open. You can use it for decentralized file sharing and sync, though it requires a little technical know-how.
- Peer-to-peer file storage and sharing
- Open source and globally distributed
- No central authority—true decentralization
- Resilient to outages and censorship
5. Magic Wormhole
Magic Wormhole is a simple way to securely transfer files between computers using a code. While it doesn’t auto-sync folders, it’s excellent for quick, secure file transfers.
- Strong, one-time-use codes for transfers
- Open source and cross-platform
- No user accounts required
- End-to-end encrypted
6. Seafile
Designed for both private users and businesses, Seafile focuses on secure file sync and collaboration. Choose from self-hosted or hosted solutions.
- High performance, even with large files
- Client-side encryption
- Multi-platform apps
- Supports file versioning and collaboration
7. OnionShare
For those who need extra anonymity, OnionShare lets you securely and anonymously share files of any size using the Tor network.
- Runs over Tor for privacy and anonymity
- No accounts necessary
- Easy web interface, cross-platform
- Supports file sharing and chat
8. FreeFileSync
Great for users who want to manually sync files between local drives or network shares. It’s free, open source, and works on all major platforms.
- Configurable synchronization rules
- Real-time sync
- Supports Windows, macOS, Linux
- No cloud dependency
9. NitroShare
NitroShare is a simple way to quickly share files on your local network, making it ideal for homes and small offices.
- Automatic device discovery on LAN
- Cross-platform (Windows, macOS, Linux)
- No configuration needed
- Drag-and-drop interface
10. Synkron
Best for users who prefer a straightforward interface for basic folder synchronization. Synkron is open source and easy to set up.
- Synchronizes multiple folders simultaneously
- Restore and backup functionality
- Available for Windows, macOS, and Linux
- Free and lightweight
11. Croc
Croc enables secure and simple peer-to-peer file transfers with code-based authentication, suitable for both command-line lovers and non-technical users.
- Transfer large files surprisingly fast
- End-to-end encryption
- Cross-platform compatibility
- No complex setups or registrations
12. SparkleShare
SparkleShare is an open-source solution that leverages Git for file synchronization, perfect for those who want version control with their sync solution.
- Real-time, decentralized sync
- Integrated version history
- Works with existing Git servers
- Windows, macOS, Linux support
Conclusion
Choosing the right Syncthing alternative depends on your needs—be it seamless peer-to-peer syncing, extra collaboration tools, or heightened privacy. Each solution in this list brings something unique to the table, so consider what matters most for your workflow and give a few a try. In 2025, the world of secure peer-to-peer file synchronization is more diverse and vibrant than ever!
Frequently Asked Questions
1. Is it safe to use Syncthing alternatives for sensitive files?
Yes, most alternatives listed here focus on robust encryption and privacy. Always review the security protocols of the software you choose and enable end-to-end encryption when possible.
2. Are these solutions suitable for large files?
Absolutely. Apps like Resilio Sync, IPFS, and Croc are known for handling huge files and folders efficiently, with no artificial size limits.
3. Can I use these alternatives without internet access?
Many tools, like NitroShare and FreeFileSync, can synchronize files over local networks without an active internet connection.
4. Do any of these alternatives offer mobile apps?
Yes, solutions such as Resilio Sync, Nextcloud, and Seafile offer mobile applications for both iOS and Android, making on-the-go file access easy.