Transfer.zip

Transfer.zip is an open-source file-sharing solution that can be self-hosted for reliable file delivery and simple sharing workflows. It supports both stored, resumable uploads as well as real-time, end-to-end encrypted peer-to-peer transfers in the browser.

Key Features

• Resumable and reliable uploads using the tus protocol
• Stored transfers with expiry and automatic deletion
• Optional storage backends: local disk or S3-compatible object storage
• Quick Transfers: browser-based peer-to-peer file sending via WebRTC with end-to-end encryption (AES-GCM)
• Transfer requests to collect files from others via shareable upload links
• Send transfers to recipients via email
• Basic customization/branding for transfer pages and emails (with current S3 requirement)

Use Cases

• Self-hosted alternative to WeTransfer-style “upload then share a link” workflows
• Peer-to-peer sharing for sensitive files without server-side storage
• Collecting files from clients or teammates using upload-request links

Limitations and Considerations

• Quick Transfers require both parties to be online at the same time
• Some browsers/devices may have issues with Quick Transfers (notably Safari and Firefox mobile)
• Peer-to-peer connectivity can be impacted by restrictive networks; relaying may be used in some cases

Transfer.zip is a solid choice for teams and individuals who want a privacy-conscious file sharing service with both scalable stored uploads and encrypted real-time transfers. Its modern web stack and storage flexibility make it suitable for personal servers and larger deployments alike.