'nb' monitors a watchlist of authors and sends an email alert whenever a new book is published. It is useful for keeping track of favorite authors to be notified when they release a new book. It uses LibraryThing as a database but doesn't require an account there.
Example email output:
Date: Wed, 11 Apr 2012 06:10:44 -0400 From: email@example.com To: firstname.lastname@example.org Subject: New Books at LibraryThing 1 new work for Mark Lynas (lynasmark) * The God Species: How Humans Really Can Save the Planet... http://www.librarything.com/author/lynasmark
See nb.txt for docs