NetSurveyor is an 802.11 (WiFi) network discovery tool. It gathers information about nearby access points and displays the data using a variety of charts. Data can be recorded for later playback. Reports can be generated in Adobe PDF format.
NetStress is a network benchmarking tool. It is used to generate network traffic and measure the network's throughput performance -- both for wired and wireless (802.11, WiFi) networks.