A tool that comes with Everything source code.
The purpose of life of the tool is to import and export nodeballs (for less technologically savvy, this just means that it collects nodes from database to single archive file, and can also install such archives to the database).
Usage is simple:
nbmasta [-v] [--force] (import|export|remove) <NODEBALL> <DATABASE>
For example, to export a new cool nodetype of mine, I first collected references to relevant nodes to node "calendarmetanode (nodeball)", and then typed
$ nbmasta -v export calendarmetanode everything
to produce calendarmetanode.nbz that can be installed (or so the theory goes) to other Everything clones with
$ nbmasta -v import calendarmetanode.nbz everything
...or something similiar.