@unpublished{
    NEO,
    Title={Nelson Email Organizer - NEO - The Microsoft Outlook
           Email Software Add-On},
    Institution={Caelo Software Inc.},
    Year={2004},
    note={\url{http://emailorganizer.com}}
}

@unpublished{
    relink,
    Title={Relink},
    Year={2004},
    note={\url{http://relink.sourceforge.net}}
}

@unpublished{
    discusware:2003,
    Title={Linear v.s Threaded Discussion},
    Institution={DiscusWare, LLC},
    Year={2003},
    note={\url{http://support.discusware.com/center/resources/essays/thread.php}}
}

@unpublished{
    roberts:2004,
    Title={Andy Roberts' Blog},
    Year={2004},
    note={\url{http://blog.ultralab.net/~blogger/andy/archives/000651.html}}
}