Lync Server 2010, Stress and Performance Tool http://www.microsoft.com/en-us/download/details.aspx?id=25005
Microsoft Lync Server 2010 Capacity Calculator http://www.microsoft.com/en-us/download/details.aspx?id=12295
Microsoft Lync Server 2010 Resource Kit Tools- snooper http://www.microsoft.com/en-us/download/details.aspx?id=21165
Uninstalling Microsoft Lync Server 2010 and Removing Server Roles http://www.microsoft.com/en-us/download/details.aspx?id=18692
Downloads for Lync 2010 http://technet.microsoft.com/en-us/lync/gg236589.aspx