WaveWatcher is a network management program for the monitoring and logging of wireless networks.
Category:   Software > Monitoring/Scanning

KisMAC is an opensource and free stumbler/scanner application for Mac OS X. It has an advantage over MacStumbler/iStumbler/NetStumbler in that it uses monitor mode and passive scanning.
KisMAC supports several third party PCMCIA cards - Orinoco, PrismII, Cisco Aironet, Atheros and PrismGT. USB Prism2 is supported as well, and USB Ralink support is in development. All of the internal AirPort hardware is supported as well.
Please note: This program is not intended for novices, but for professional users. Take this as a warning
Category:   Software > Monitoring/Scanning

WiSentry creates a secure buffer-zone between your WLAN and the internal wired network. With WiSentry, IT organizations can authorize 802.11 wireless devices for trusted access and lock-out all other devices. WLAN hackers and network intruders are identified and barred access from the wired LAN. Unsecured wireless access points are detected immediately, allowing for removal of the access point before network security is compromised
Category:   Software > Monitoring/Scanning

This project aims to create a GNOME-based panel applet and management tool to manage wireless network cards that support Linux wireless extensions.
Category:   Software > Monitoring/Scanning

Grasshopper[tm] is a handheld, wireless receiver designed specifically for sweeping and optimizing Local Area Networks. The instrument measures coverage of direct sequence CDMA networks which operate on the IEEE 802.11b standard allowing the user to measure and determine the AP (AccessPoint), PER (Packet Error Rate) and RSSI signal levels aiding in locating the hub and access points throughout a building. Grasshopper detects and differentiates from narrow-band multipath interferences such as microwave ovens and frequency hopping systems and features a built-in display, keypad and removable battery pack for true portability.
Category:   Software > Monitoring/Scanning