inSSIDer

Let's face it-- there's SOOO much Wi-Fi everywhere these days, the built-in Wi-Fi tools and free utilities that used to help us understand the Wi-Fi environment just can't keep up anymore.

Commercial Windows Android Android Tablet

Munin

Munin is a networked resource monitoring tool that can help analyze resource trends and "what just happened to kill our performance?" problems. It is designed to be very plug and play.

Free Open Source Mac OS X Windows Linux

NetStumbler

NetStumbler is a tool for Windows that allows you to detect Wireless Local Area Networks (WLANs) using 802.11b, 802.11a and 802.11g.

Free Windows

Cacti

Cacti is a complete frontend to RRDTool, it stores all of the necessary information to create graphs and populate them with data in a MySQL database. The frontend is completely PHP driven.

Free Open Source Windows Linux

ntop

NTop is a hybrid layer 2 / layer 3 network monitor, that is by default it uses the layer 2 Media Access Control (MAC) addresses AND the layer 3 tcp/ip addresses. ntop is capable of associating the two, so that ip and non-ip traffic (e.g.

Free Open Source Mac OS X Windows Linux

Kismet

Kismet is an 802.11 layer2 wireless network detector, sniffer, and intrusion detection system. Kismet will work with any wireless card which supports raw monitoring (rfmon) mode, and (with appropriate hardware) can sniff 802.11b, 802.

Free Linux

Homedale

With Homedale you can search for Wi-Fi / WLAN Access Points and monitor their signal strength. Use the detected access points with Google Geolocation and Mozilla Location Service to locate yourself.

Free Windows

vnStat

vnStat is a console-based network traffic monitor for Linux and BSD that keeps a log of network traffic for the selected interface(s). It uses the network interface statistics provided by the kernel as information source.

Free Open Source Linux BSD

nload

nload is a console application which monitors network traffic and bandwidth usage in real time.

Free Open Source Linux BSD Solaris

Virtual WiFi Hotspot

Virtual Wifi Hotspot is a free software router for Windows based system running Windows 7, Windows 8, Windows Server 2008 R2 and Windows Server 2012.

Free Windows

NETGEAR WiFi Analytics

How strong is your WiFi signal? You can use the NETGEAR WiFi Analytics app to get advanced analytics that help you optimize your existing or newly extended WiFi network.

Free Android Android Tablet

darkstat

darkstat is a packet sniffer which runs as a background process, captures network traffic, calculates statistics and serves them to a web browser.

Free Open Source Mac OS X Linux BSD

trafshow

TrafShow continuously display the information regarding packet traffic on the configured network interface that match the boolean expression. It periodically sorts and...

Free Open Source Linux

ethstatus

Ethstatus is a console-based monitoring utility for displaying statistical data of the ethernet interface on a quantity basis. It is similar to iptraf but is meant to...

Free Open Source Linux