PingView is a simple network monitor. After running a wizard, it creates a visual tree of important network components. While it runs, it wakes up periodically and checks that all required components are online and accessible.
PingView does real-time monitoring of small- to medium-sized wired and wireless networks using a variety of testing methods such as the well-known "ping" and selective TCP port probing. (Most modern routers, modems, and wireless equipment respond to standard "pings.") Instead of specifying network elements in a flat list, PingView allows you to indicate the network "topology," or the relationships between elements. For example, your router should respond to a "ping" before your DNS server is tested since a router failure will block all further access to the Internet.
When a failure occurs, PingView marks the location of the failure. The target information can contain the location of the device and the corrective action to be taken (restart, call someone, etc.).
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.
With inSSIDer, you can inspect your Wi-Fi and surrounding networks, scan and filter hundreds of nearby access points, troubleshot the competing access points and clogged Wi-Fi channels, and more.
Simple Port Tester is a free program by PcWinTech.com to help users test if their ports are open with just a few clicks. Now supports 52 Languages. Portable version also available.