PingTool - PingTool is a powerful utility for administrators. It's more than just a simple ping tool: PingTool is able to wake up computers by Wake-on-Lan, to check the availability of TCP ports, to scan the network and much more.
Features
• Shows permanently the status of network devices (red/green)
• IP range scan - with MAC addresses and vendors
• Checks if remote devices answer on specific TCP ports
• Wakes up computers with Wake-on-Lan
• Direct access to devices via Telnet, SSH and HTTP(s)
• Free - for private and business use
Download: 
PingTool 4.3.0.84.zip - 5.5 MB