The Network Administrator

https://www.mesh.com/welcome/default.aspx – Windows live mesh, allows you to sync files and remote desktop to any computer running live mesh client.

http://www.leafnetworks.net/ – Enable network and device sharing between an individual’s home office and work PCs

http://www.cacti.net/ – Data collection, storage and graphing tool that lets you poll data from multiple sources and create visual representations of information across complex networks

http://www.kismetwireless.net/ – Kismet is an 802.11 Layer 2 wireless network detector, sniffer and intrusion detection system. It works with any wireless card that supports raw monitoring mode

http://www.kiwisyslog.com/ – Kiwi Syslog Daemon is a freeware Syslog Daemon for Windows that receives messages from network devices and displays them in real time

http://oss.oetiker.ch/mrtg/ – MRTG (Multi Router Traffic Grapher) is a tool that graphs router and other network device traffic by monitoring SNMP and creating visual images of the traffic passing through each interface.

http://www.solarwinds.com/products/freetools/netflow_configurator.aspx – If you are unfamiliar with the command-line options for configuring NetFlow set up NetFlow on supported Cisco devices.

http://nmap.org/ – uses raw IP packets to determine which hosts are available on the network, which services those hosts are offering, what operating system they are running and what types of packet filters and firewalls are in use

http://www.pingplotter.com/–traceroute application that allows you to trace the route between them and a target and collect performance metrics about that route.

http://www.plixer.com/products/netflow-sflow/free-netflow-scrutinizer.php – NetFlow and sFlow analyzer that accepts unlimited flows from routers, switches and network interfaces

http://www.uvnc.com/ – remotely control the screen of another computer from a workstation via the Internet or a network connection.

http://www.wireshark.org/ – examine protocol data from a live network or from a capture file on disk

http://www.ziptie.org/overview – network inventory and configuration management

http://phpwiki.sourceforge.net/ 

http://iptrack.sourceforge.net/ – IP address management (IPAM) software and tracking tool