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Applications

You can use the Applications pane to execute applications present by default in OS X but not easily accessible to you.

Screen Sharing:

With OS X, you can connect to another computer on your network and display that computer’s screen on your computer. While you share the computer’s screen, you can control what happens on that computer, such as opening documents or applications; opening, moving, or closing windows; and even shutting down the computer.

You can also share your computer’s screen with another computer on your network.

Network Utility:

Network Utility combines several information and troubleshooting tools you may find helpful if you understand basic networking.

Using Network Utility, you can check your computer’s network interfaces, test access to specific hosts or IP addresses (ping), review network performance statistics, convert between IP addresses and host names, find user information, and scan active TCP ports.

Network Diagnostics:

You can use Network Diagnostics to help solve Internet connection issues. If you can’t connect to the Internet, Network Diagnostics opens and walks you through solving the issue.

You can use Network Diagnostics to diagnose issues related to your Ethernet, AirPort, or internal or external modem connections. If you are trying to connect to the Internet using another method, see the documentation that came with your Internet account.

Wireless Diagnostics:

Use Wireless Diagnostics to diagnose your wireless network, record network events, capture network traffic, and turn on debug logs.

Wireless Diagnostics produces a report that can be sent to Apple for analysis.

Directory Utility:

Directory Utility determines which directory services an OS X computer uses and how it connects to specific directory domains. Directory Utility also defines search policies for finding authentication and contacts information in specific directory domains.

See the Directory Utility Help for more info.