These are a set of plugins for Vim.  You can download released versions here:

  lusty-explorer.vim: http://www.vim.org/scripts/script.php?script_id=1890
  lusty-juggler.vim:  http://www.vim.org/scripts/script.php?script_id=2050

The Emacs version of this plugin used to be here, too, but now it has its own
repository:

  http://github.com/sjbach/lusty-emacs

NOTE: lusty-explorer.vim and lusty-juggler.vim are generated files; modify
src/ if you'd like to submit a patch.