Total Network Inventory: Professional PC audit and network inventory management software - fits best for a for companies of all sizes. Free for 60 days.
Padlet - Visual boards for organizing anything.
Network Inventory Advisor - Network Inventory Advisor audits all network software and hardware simply and efficiently
Kids A-Z - Kids A-Z created and published by Lazel Inc.
Lansweeper - Lansweeper discovers Windows, Linux and Mac machines in your network.
Popplet - Popplet is the simplest application to capture and organize your idea.
Nmap - Nmap Free Security Scanner, Port Scanner, & Network Exploration Tool. Download open source software for Linux, Windows, UNIX, FreeBSD, etc.