With InstantLogonChanger always have your Windows 7 logon background the same as your Desktop wallpaper or set it to any other image or color without any security prompts or changing system files.
Netwrix Logon Reporter is a freeware product for logon event archiving and reporting. The product consolidates the logon events from all Active Directory domain controllers and archives them. The commercial version provides reporting capabilities.
LepideAuditor Suite is a complete user logon auditing software available for whole AD infrastructure. It provides customized user logon reports to the administrators. It also gives information about failed logon attempts on domain controllers.