GlassWire!

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. »

Comodo Firewall Pro - Secure your system against internal attacks such as Trojan viruses / malicious software and external attacks by hackers. Safeguard your personal data through a simple user friendly single click interface offering full immunity to attack. Comodo Firewall Pro helps you connect in a secure way to the internet and global networks.

A firewall protects your computer against unwanted guests from the Internet. But who protects your private data from being sent out? Little Snitch does!

TinyWall is a free software to harden and control the advanced firewall built into Windows Vista, Windows 7 and Windows 8. TinyWall includes a combination of features that sets it apart from both commercial and freeware firewalls: TinyWall does not annoy you with popups at all, yet it is still extremely easy to add exceptions to your firewall rules; TinyWall does not require you to know about ports, protocols and application details; TinyWall prevents malicious programs from modifying the settings of Windows Firewall. »

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! »

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.

Protects your applications from undesirable network incoming and outgoing activity, controls applications internet access. Allows you to control personal information leakage via controlling application network traffic.

This personal firewall and intrusion detection application provides comprehensive online security. It constantly monitors your PC for intrusion and reports any findings, so you can take the appropriate action.

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.

ZoneAlarm Free Firewall blocks hackers from infiltrating your home PC by hiding your computer from unsolicited network traffic. By detecting and preventing intrusions, ZoneAlarm Free Firewall keeps your PC free from viruses that slow down performance, and spyware that steals your personal information, passwords, and financial data.

Windows Firewall Notifier (WFN) extends the default Windows embedded firewall behavior, allowing to visualize and handle incoming or outgoing connections.

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.