Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.
Apache Tomcat - An open source software implementation of the Java Servlet and JavaServer Pages technologies
SolarWinds Network Configuration Manager - SolarWinds is a leading provider of powerful and affordable IT infrastructure management software. Make IT look easy.
Microsoft IIS - Internet Information Services is a web server for Microsoft Windows
Cisco Network Assistant - Cisco Network Assistant simplifies wired and wireless network management, and provides critical product information using Cisco Active Advisor.
Apache HTTP Server - Apache httpd has been the most popular web server on the Internet since April 1996