Syncthing

Open source continuous file synchronization

Alternative to: dropbox, google drive, onedrive, resilio sync

Syncthing is a continuous file synchronization program that syncs files between two or more devices in real time. It has no central server: data is stored only on your own devices, and every connection is secured with TLS and authenticated with strong cryptographic certificates. It's managed entirely through a responsive browser-based web GUI and runs on Windows, macOS, Linux, and BSD.

Syncthing Docker Compose example

Self-host Syncthing on your own server, homelab, or VPS starting from this Docker Compose example. It runs Syncthing in Docker containers using the official syncthing/syncthing:latest image, with persistent volumes and automatic restarts preconfigured. Review the environment variables and adjust them to your setup, save the file as compose.yml (or docker-compose.yml), and start the stack with docker compose up -d.

services:
  syncthing:
    image: syncthing/syncthing:latest
    restart: unless-stopped
    environment:
      # User ID the Syncthing process runs as (owns files on the data volume).
      PUID: "1000"
      # Group ID the Syncthing process runs as.
      PGID: "1000"
      # Address the web GUI listens on. Bound to all interfaces so it is reachable
      # from the reverse proxy (upstream default binds to 127.0.0.1 only).
      STGUIADDRESS: "0.0.0.0:8384"
    volumes:
      - data:/var/syncthing

volumes:
  data:

Prefer a managed setup? WinterFlow installs, configures, and updates Syncthing for you using this same Docker Compose configuration.