Developer Michal Mutl has a powerful network scanner software and network discovery tool available for Windows and it is built in Delphi. According to the site it “is a free multi-threaded ICMP, Port, IP, NetBIOS, ActiveDirectory and SNMP scanner with many advanced features. It is intended for both system administrators and general users who are interested in computer security. The program performs ping sweep, scans for opened TCP and UDP ports, resource shares and services. For devices with SNMP capability available interfaces are detected and basic properties displayed. In addition you have to edit results, save/load results to/from CSV and print network device list and any data in any section can be exported to CSV. It can also resolve host names and auto-detect your local IP range.” This is really a powerful tool to discover the topography of your network and investigate computer security. It is a great example of the breadth of capabilities available to a developer in the Delphi environment. On top of all of the powerful features the app really looks great as well with a theme switcher built in.