Syncthing is an open-source continuous file synchronization program. It synchronizes files between two or more computers in real time, securely.
Best croc Alternatives ranked by AI · updated Aug 2026
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croc is an open-source command-line utility for securely transferring files and folders between computers. It uses end-to-end encryption and relay support, making it suitable for developers and terminal-oriented users.
Top 6 croc alternatives
Send Anywhere is a file sharing service that allows users to easily share files across different devices and platforms.
Free with in-app purchases
Onionshare is an open-source tool that allows you to securely and anonymously share files over the Tor network.
Magic Wormhole is an open-source command-line tool and Python library for transferring files and short text between computers using human-readable one-time codes....
Pros
- End-to-end encrypted transfers with short, human-readable codes
- No account, cloud storage, or persistent file hosting required
- Works across platforms and supports command-line automation
Cons
- Less accessible to nontechnical users than graphical transfer services
- Transfers depend on a relay when direct peer-to-peer connectivity fails
- One-time codes are less convenient for recurring device synchronization
WebWormhole is a browser-based service for sending files and text between devices without accounts or installations. It pairs users with a short...
Pros
- No account, installation, or cloud storage workflow
- Works directly in modern web browsers
- Uses short pairing codes instead of recipient accounts
Cons
- Less convenient for recurring transfers than desktop sync tools
- Browser-to-browser connections can fail on restrictive networks
- Large transfers depend on the browser tab remaining open
SwissTransfer is a free large-file transfer service operated by Swiss cloud provider Infomaniak. It supports high-volume transfers with configurable expiration and password...
Pros
- Free transfers support much larger files than many basic plans
- Password protection and expiration controls are included
- No advertising-heavy interface or mandatory subscription
Cons
- Less familiar to recipients than WeTransfer
- No persistent team workspace or file synchronization
- Fewer branding and workflow options than paid services
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