You can set up your own Smos server to host your own syncing.

A community sync-server has been set up at https://api.smos.cs-syd.eu in case do not want to do that

To run the server, run the following command:

$ smos-server serve

Usage: smos-server COMMAND [--config-file FILEPATH]
  smos-server

Available options:
  -h,--help                Show this help text
  --config-file FILEPATH   The config file to use

Available commands:
  serve                    Serve as the sync server

# Configuration
log-level: # optional
  # The minimal severity for log messages
  <string>
uuid-file: # optional
  # The file in which to store the server uuid
  <string>
database-file: # optional
  # The file in which to store the database
  <string>
port: # optional
  # The port on which to serve api requests
  <number>