C2 TransferSynology C2
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Related Products
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About
End-to-end encryption and user identity authentication let you transfer files securely. Optional protections help you prevent unauthorized tampering with the content. A two-step process using sharable transfer links and one-time passwords sent via email or SMS makes sure only the right people receive your files. Protect uploaded content with links that expire, download limits, and watermarks. C2 Transfer works for anyone who shares a great number of files. Up to 100 transfers can be active at the same time and each transfer can contain 20 GB worth of files. Request and receive files from anyone by sending them a simple and secure link. All files are encrypted and recipients are asked to verify their identity before uploading files. Businesses can quickly manage C2 Transfer licenses through a simple interface, simplifying user access. Secure file sharing doesn't need to be complicated. Simple steps ensure each file you send with C2 Transfer is delivered to the right person.
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About
SEAL is a file-transfer service for sharing documents, media, design files, datasets and archives through temporary links. In the web app, files are encrypted in-browser before upload; CLI encryption is local. Senders can set expiry, passwords, single-use access, download limits or NDA gates, review a signed access log, and revoke hosted access. Recipients open links in a browser without an account. SEAL also offers a Telegram bot and Mini App, a CLI, SDK, HTTP API and local stdio MCP server. AI agents can share or request files and secrets; after pairing, files can go to a SEAL inbox while the agent receives a handle instead of a link. The Telegram bot encrypts files on its host, so chat attachments pass through Telegram's infrastructure first; its Mini App encrypts on-device. Each seal includes up to 1 GB and seven days. One-time upgrades add capacity and lifetime; individual files are limited to 10 GB.
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Platforms Supported
Windows
Not Supported
Mac
Not Supported
Linux
Not Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Platforms Supported
Windows
Supported
Mac
Supported
Linux
Supported
Cloud
Supported
On-Premises
Not Supported
iPhone
Not Supported
iPad
Not Supported
Android
Not Supported
Chromebook
Not Supported
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Audience
Professionals and anyone in need of a solution for sharing and receiving files in a secure and reliable way
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Audience
Freelancers, small teams, designers, audio/video creators, CAD and 3D-printing services, and developers delivering AI-generated reports and archives to people.
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Support
Phone Support
Not Supported
24/7 Live Support
Supported
Online
Supported
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Support
Phone Support
Not Supported
24/7 Live Support
Not Supported
Online
Not Supported
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API
Offers API
Not Supported
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API
Offers API
Supported
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Screenshots and Videos |
Screenshots and VideosNo images available
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Pricing
$99.99 per year
Free Version
Not Supported
Free Trial
Supported
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Pricing
$9 one-time
Free: each seal holds up to 1 GB for up to 7 days. One-time upgrades per seal: $9 for 5 GB/3 months, $29 for 50 GB/6 months, or $99 for 500 GB/12 months. No recurring subscription; individual files remain limited to 10 GB.
Free Version
Supported
Free Trial
Not Supported
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Reviews/
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Reviews/
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Training
Documentation
Supported
Webinars
Supported
Live Online
Not Supported
In Person
Not Supported
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Training
Documentation
Supported
Webinars
Not Supported
Live Online
Not Supported
In Person
Not Supported
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Company InformationSynology C2
c2.synology.com/en-us/transfer/overview
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Company InformationSEAL
seal.net
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Alternatives |
Alternatives |
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Categories |
Categories |
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Integrations
Claude Code
Not Supported
Claude Desktop
Not Supported
Cline
Not Supported
Cursor
Not Supported
Model Context Protocol (MCP)
Not Supported
Telegram
Not Supported
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Integrations
Claude Code
Supported
Claude Desktop
Supported
Cline
Supported
Cursor
Supported
Model Context Protocol (MCP)
Supported
Telegram
Supported
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