BWMeter!

GlassWire is a free network security monitoring tool and analyzer that visualizes your network activity on an easy to use graph, alerts you of possible threats, manages your firewall, and more.

NetWorx is a simple and powerful tool that helps you objectively evaluate your bandwidth situation. It can ensure that you do not exceed the bandwidth limits specified by your ISP, help identify sources of network problems, and help track suspicious network activity. The software features highly customizable visual and sound alerts that can alert you of a variety of events, such as bandwidth quotas, network downtime, and suspicious network activity. The traffic is represented on graphs as well as logged to a file, so you can view and save statistics about your daily, weekly and monthly bandwidth usage at any time. NetWorx became commercial with version 6.0.0 released January 1st, 2017; the last free version is 5.5.5. »

NetBalancer is an internet traffic control and monitoring tool designed for Windows XP/2003/Vista/Win7.

NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows. You can use NetLimiter to set download/upload transfer rate limits for applications or even single connection and monitor their Internet traffic.

NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar designed to be used on computers that run Windows XP, Windows Server 2003, Windows Vista or Windows 7. With NetSpeedMonitor you can monitor the current speed (up- and downstream) of your Network Interfaces and the amount of data transferred. In addition to the Connection Table with all TCP/UDP endpoints and the Toolbar Tooltip with a quick and short traffic overview, you can also see detailed daily and monthly Traffic Statistics. NetSpeedMonitor toolbar requires no additional drivers like other Network Monitoring tools do! »

An advanced, easy-to-use monitoring solution for your entire network. The software's features include: up/downtime monitoring, traffic and usage monitoring, packet sniffing, failover clustering, in-depth analysis and concise reporting. A user-friendly web-based interface allows users to quickly auto-discover and configure the network devices and sensors they wish to monitor. All common methods for acquiring network usage data are supported: SNMP and WMI, Packet Sniffing and NetFlow / sFlow / jFlow. It also offers SMTP/IMAP Roundtrip-Email Monitoring and VMware Monitoring, VoIP Monitoring, Toplists for Packet Sniffing and Netflow Sensors, as well as sensor aggregation using its built-in Sensor Factory. PRTG Network Monitor includes more than 200 sensor types for all common network services (e.g. PING, HTTP, SMTP, POP3, FTP, SSH etc.), allowing users to monitor networks for availability, speed and failures. As soon as an outage occurs, alerts are sent via email, SMS, pager messages and other means. Request times and downtimes are recorded in an internal database, making it easy to compile performance, downtime and SLA reports. Monitoring, reporting and notifications can be automatically scheduled at specific times. High Availabiltiy is guaranteed by the innovative failover cluster, and remote probes can be used for easy multi-location monitoring. Network maps can be created which provide users with a unique visual network management tool. PRTG Network Monitor's Freeware Edition is completely free for personal and commercial use. The Commercial Editions are required if you want to monitor more than ten sensors. »

cFosSpeed is a network driver, which attaches itself to existing Internet connections. It then optimizes data transfer by means of Traffic Shaping. This software is designed to achieve maximum performance of your Internet connection so you take advantage of it when browsing and downloading files at great speed. Besides, it allows to improve waiting time, as well as intercommunication through VoIP and then achieve an online reproduction with more precision and efficiency. This software is ideal to play online, watch videos and listen to music online and with no breaks. »

DU Meter is a network bandwidth monitor for your computer. It shows real-time graphs and can create reports and alerts based on your downloads and uploads. It enables you to use your internet connection more efficiently by providing an accurate visualization of the data that flows through your computer's network connection.

BitMeter OS keeps track of how much you use your internet/network connection, and allows you to view this information in a variety of ways.

Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph. Configurable connection speed, update interval, color, transparency. Monitor any or all network interfaces. Ping/Trace/UPnP utilities. Email notifier (POP/IMAP).

Track your Wi-Fi hotspot usage.Zero configuration required. It just works.Advanced features coming soon.New monthly usage tracking.Uses less memory.Basic localisations for Japanese, French, Spanish, German and Simplified Chinese.

Network Lights is a Windows program, which blinks keyboard LEDs (Light Emitting Diode) indicating outgoing and incoming network packets on network interface.

Data rate chart in real time. Statistics (network usage history). Quota counter (limit usage meter). Works with any network connection. Multi-language. Lightweight. Freeware.

Network Activity Indicator displays the old 'two monitors' icon in Windows 7 that flashes blue to show network activity in the System Tray.