FileSync

FileSync is a self-hosted file sharing web application for sending files from one device to many recipients in real time. It uses peer-to-peer WebRTC transfers with end-to-end encryption so file contents are not relayed through an intermediate server.

Key Features

• Real-time file transfer from a single sender to multiple receiving devices
• Peer-to-peer transfers via WebRTC (data does not pass through the server)
• End-to-end encryption with optional room password protection
• Lightweight coordination server to help establish connections between peers
• Simple web UI for sharing, monitoring progress, and downloading received files

Use Cases

• Sharing large files across devices on the same network without uploading to a cloud drive
• Securely distributing files to a group during meetings, classes, or workshops
• Temporary, privacy-focused file transfer for teams and homelabs

Limitations and Considerations

• WebRTC peer-to-peer connectivity can be impacted by restrictive NAT/firewalls, potentially requiring additional networking infrastructure for reliable connectivity

FileSync is a practical option when you want quick, browser-based file sharing with strong privacy properties. It’s especially useful for one-to-many distribution where you want transfers to remain directly between participants.