netTerrain Logical - Automated network documentation & drawing tool
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
TopMaze - Network mapping software solution
SolarWinds Network Configuration Manager - SolarWinds is a leading provider of powerful and affordable IT infrastructure management software. Make IT look easy.
CrossCode - CrossCode's desktop helps thousands of dental offices bill medical insurance will be available without having to download a single byte.
Cisco Network Assistant - Cisco Network Assistant simplifies wired and wireless network management, and provides critical product information using Cisco Active Advisor.