Windows Network Diagram Tool. It runs only in windows and can be used for collaborative work with customers and colleagues. Ad monitor network servers websites.
Network notepad is another free software to create network diagramsit is an easy to use network diagram drawing tool for windows. Dia is a such program. It is a free online diagramming software with support to network diagram and many other diagrams such as uml org chart floor plan wireframe family tree erd etc.
It facilitates you with many computer network elements required to draw network diagrams.
Use lucidchart to visualize ideas make charts diagrams more. Discovery inventory and documentation that updates in real time as the network evolves. Try visual paradigm online vp online free edition. Network drawing tool free download windows 7.