MapTools is a small Bukkit plugin to provide additional informations from a Minecraft Server to a map rendered with tools such as mapcrafter. The plugin writes every few seconds a JSON-File with informations about the players (for example their position) to the filesystem.
MapTools is free software and available under the GPL license.
You can specify a few options in the configuration file (config.yml):
markerFile
This is the output filename of the JSON-File (relative to the server
directory). It defaults to markers.json.
interval
This is the interval to write the file (in seconds). It defaults to 5 seconds.