TamoGraph Site Survey - Wi-Fi site coverage survey and modelling application
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Waircut - Free network audit app
SolarWinds Network Configuration Manager - SolarWinds is a leading provider of powerful and affordable IT infrastructure management software. Make IT look easy.
Ekahau Site Survey - Ekahau Site Survey is a flexible wireless site survey software tool that performs automatic wireless coverage calculations and collects detailed information about your wireless network environment.
Cisco Network Assistant - Cisco Network Assistant simplifies wired and wireless network management, and provides critical product information using Cisco Active Advisor.