Wakeup 

Wakeup - remote wakeup (power on) tool via LAN. It's simply - Select computers from list and press "Wake!" button ! Computers can be waked from sleep, standby, hibernate, power off states.
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VNC Scan Enterprise Console 

VNCScan allows you to remotely control and manage your workstations and servers. With VNCScan, you can: * Scan for and deploy VNC Remote Control on your network * Manage unlimited computers * Terminal Servers AND VNC
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LanHelper 

Scan network with a powerful engine. Boot or shut down or lock your PCs. Execute commands remotely. Capture screen or manage processes remotely and more. Monitor servers' availability in LAN/WAN. No server program needed. Support XML.
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