SPICEWORKS is a completely free software that generates useful information from your organization's LAN, Getting statistics on how many devices are on the network, how many PCs, Servers, Printers, Switches… And from each one he gets all the information possible, what operating system does it have?, what software/patches you have installed, Your Setup, Physical Data… and the interesting part would be the alerts. Alerts can be generated and we can be notified when there is a, for example, that it does not have AntiVirus, disk space, Fallen services… First of all, get this software, Its website is: www.spiceworks.com.