Wiki-nav mode is a minor mode for navigating files via [[wiki-style]] double-bracketed links.
It is not related to EmacsWikiMode and similar tools for building a personal Wiki. Instead, wiki-nav mode is designed to help you navigate around in the files you already have.
Wiki-nav is distributed with ButtonLockMode:
and is also available via EmacsWiki
Tested only on GNU Emacs version 24.1