WifiInfoView will quickly scan all the wireless networks in your area and then provide you with extensive information about them; great for diagnosing a connectivity issue or locating your router's model number, and more.
Complete Internet Repair does exactly what it says. It attempts to repair everything internet-related, including networking problems. Video tutorial and a portable version are also available.
Complete Internet Repair Portable does exactly what it says. It attempts to repair everything internet-related, including networking problems. An installer and a video tutorial are available.
VOVSOFT Network Alarmer allows you to check the availability of network devices using their IP addresses and can send automatic phone calls or email notifications in case of issues.
ChrisPC DNS Switch makes DNS changes more easily and lets you choose the one that fits your browsing habits from a series of alternative DNS. ChrisPC DNS Switch Pro also available.
ChrisPC DNS Switch Pro provides you with a graphic user interface to select a network adapter/card and change its corresponding DNS with the selected DNS. ChrisPC DNS Switch Free available here.