WirelessMon 

WirelessMon is a software tool that allows users to monitor the status of wireless WiFi adapter(s). It gathers information about nearby wireless access points and hot spots in real time as well as providing logging and graphs of collected data.
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MaTreo 

MaTreo is a freeware frontscreen originally made for the palmOne Treo 180 and 270: it displays an elegant aliased analog clock, a battery indicator level, current carrier and roaming (if any), signal strength, date and time.
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