Real Time information (System tab) provides system information, updated in real time:

SYSTEM

• Operating System
• CPU (number of cores and usage)
• RAM (quantity and usage)
• Disks (types and usage)

PROCESSES

Processes tab allows to see the processes currently running on the system, in real time.
With the context menu, you can kill them one by one, or whole tree (using parent/child relationship).

SERVICES

Services tab allows to see the services installed on the system, and their status (running, start mode).
With the context menu, you can start or stop them.

NETWORK

Network tab allows to see the sockets opened on the system, and their status (waiting, established, …).
It also displays which process did open the communication socket.