ManageEngine OpManager Professional Edition - subscription license (1 year) - 2 users, 1000 devices

OpManager is a complete, end-to-end network monitoring software that offers advanced fault and performance management functionality across critical IT resources such as routers, WAN links, switches, firewalls, VoIP call paths, physical servers, virtual servers, domain controllers & other IT infrastructure devices. Further the network monitoring software, combines an easy-to-use interface that lets you quickly deploy the product for production and also apply your organization's monitoring policies across multiple devices quickly.

ManageEngine OpManager is an integrated network, system, application and datacenter monitoring software that offers advanced levels of fault and performance management functionalities. OpManager is an affordable, easy-to-use, easy-to-install tool that works right out-of-the-box.