# polius/FileSync

Send files from one device to many in real-time.

Repository: https://github.com/polius/FileSync
Canonical: https://ross.abutalabs.com/products/filesync
Homepage: https://filesync.app
Language: JavaScript
License: MIT
License Family: permissive
Topics: fastapi, fileshare, javascript, self-hosted, webrtc, docker
Last push: 2026-08-03T19:56:33+00:00

## Health v2 (maintenance only)
Score: 90/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 95, release rhythm 88, longevity 82
- inputs: {"age_days": 1148, "days_push": 30, "days_rel": 83, "gap_med": 7, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1492, forks 140 (observed 2026-08-28T04:04:52.489435+00:00)

## What it is
FileSync is a self-hosted web application for sending files from one device to many in real time over encrypted peer-to-peer WebRTC connections. A lightweight FastAPI signaling server brokers connections but never sees file contents, and received files stream to disk with no size limit.

## Use cases
- share files between devices without uploading to a cloud
- send large multi-gigabyte files with no size limit
- broadcast files to many devices at once via a room link or QR code
- self-host a private file transfer service
- transfer files across networks with NAT traversal
- share files without creating accounts or installing apps

## When to choose
- you want private, peer-to-peer transfers where the server never sees file contents
- you need one-to-many file distribution in real time
- you want a self-hosted alternative with a single Docker image
- recipients should just open a browser link with no installs

## When to avoid
- you need asynchronous transfers where recipients are offline when files are sent
- you want permanent cloud file storage or file history
- you cannot run a server or Docker container
- you need transfers through restrictive firewalls without TURN relay setup

## Facets
- artifact type: application
- maturity: active
- function: file-upload, http-server, websocket, security
- domain: files, privacy, self-hosted, web-development
- platform: self-hosted, browser, cross-platform
- tags: file-sharing, webrtc, p2p, one-to-many, qr-code, no-size-limit, end-to-end-encryption, fastapi, docker, web-server

## Member repositories
- polius/FileSync (main) score 90

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:04:52.489435+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T04:33:31.244158+00:00, confidence not recorded.
  - readme: https://github.com/polius/FileSync (fetched 2026-08-28T04:04:52.489435+00:00, sha 203a95e18eba)
  - homepage: https://filesync.app (fetched 2026-08-29T11:39:30.209983+00:00, sha 3fdc506d9e23)
- Data as of 2026-08-30T08:39:29.467469+00:00.