Apps to Network Monitoring

Simplewall is a robust and lightweight firewall application for Windows, designed to control and monitor network activity for applications. It leverages the Windows Filtering Platform (WFP) to provide granular control over outbound connections, enhancing privacy and security by allowing users to block unwanted network communication.

CasperJS is a navigation scripting and testing utility for PhantomJS and SlimerJS headless browsers. It significantly simplifies web testing and scripting tasks by offering a high-level API that wraps the core functionalities of these engines, making common operations like navigation, form filling, and capturing screenshots intuitive and straightforward for developers and testers.

PHP Server Monitor is an open-source, self-hosted tool for monitoring server and website availability and performance. It provides essential monitoring features, including uptime checks, website status, and various service monitoring, all from a centralized web interface.

Nethogs is a small, open-source 'net top' tool that groups bandwidth usage by process. It provides a real-time view of network activity, helping users identify applications consuming the most bandwidth.

nmon is a powerful and lightweight command-line tool designed for comprehensive system monitoring and analysis on AIX and Linux systems. It provides real-time performance data across various critical areas, including CPU, memory, disk I/O, network activity, kernel statistics, and top processes, making it an essential utility for system administrators and performance analysts.

Ettercap is a powerful, open-source suite designed for Man-in-the-Middle (MITM) attacks on local area networks. It provides a versatile platform for network sniffing, content filtering, active and passive dissection, and injecting data into connections. Primarily used for penetration testing and security analysis.

mtr is a network diagnostic tool that combines the power of 'traceroute' and 'ping' to provide continuous, real-time monitoring of the network path to a destination.

Skipfish is a discontinued command-line web application security scanner known for its recursive crawling and heuristic detection capabilities. It's designed to quickly assess web applications for common vulnerabilities and security flaws.

GKrellM is a highly customizable system monitor for multiple operating systems. It provides a compact, stackable interface displaying various system data like CPU load, memory usage, network activity, and more, making it a favorite for users who need detailed system insights without a heavy footprint.

Windows Firewall Notifier (WFN) is a lightweight, portable utility that extends the native Windows Firewall's capabilities, providing real-time connection monitoring, bandwidth usage tracking, and granular control over outbound network connections.

NetMeter is a compact and portable network monitoring tool designed to provide real-time graphical and numerical data on upload and download speeds for all active network connections. It offers a straightforward way to track bandwidth usage without requiring complex setup or installation.

ntop transforms raw network traffic into valuable insights, presenting network usage statistics similarly to how 'top' monitors processes. It provides detailed network activity monitoring, performance metrics, and historical data for effective network management and troubleshooting. Ideal for understanding network behavior and identifying bottlenecks.

Snort is a powerful open-source network intrusion detection and prevention system (IDS/IPS) used widely to detect malicious activity and network attacks. It performs real-time traffic analysis and packet logging, offering a flexible rule-based language to define malicious patterns, making it a critical tool for network security professionals.

Cacti is a comprehensive network graphing and monitoring solution built upon the power of RRDTool. It provides a flexible and scalable platform for collecting, storing, and visualizing time-series data, making it an essential tool for network administrators to gain insights into performance and identify potential issues.

AFWall+ is a robust, open-source, iptables-based firewall for Android requiring root access. It provides granular control over network access for individual applications, allowing users to restrict data usage over Wi-Fi or mobile networks and enhance device security and privacy.

Glances is a cross-platform, open-source system monitoring tool providing a comprehensive overview of system resources and processes directly from the command line or web interface. Written in Python, it is highly portable and extensible, offering a wealth of information in a dynamic and user-friendly format.

Univention Corporate Server (UCS) is a comprehensive operating system and identity and infrastructure management platform. Based on Debian, it provides powerful tools for managing servers, services, applications, and users in diverse IT environments. UCS is designed for flexibility, supporting on-premises, cloud, and hybrid deployments.

KisMAC is a sophisticated wireless network scanner and discovery tool designed specifically for macOS. It allows users to detect wireless networks, analyze their security, identify connected devices, and gather detailed information about Wi-Fi environments.

Netcat is a versatile networking utility for reading from and writing to network connections using TCP or UDP. It serves as a reliable backend for custom network tools and scripts.

Graylog is a powerful, open-source, centralized log management platform designed for collecting, indexing, and analyzing log data from various sources. It helps organizations gain operational visibility, identify security threats, and troubleshoot issues efficiently.

Open Web Analytics (OWA) is a discontinued open-source web analytics platform designed to provide detailed insights into website traffic and user behavior. Offering real-time data, visitor recording, and various monitoring capabilities, it aimed to be a privacy-conscious alternative to commercial analytics solutions.

Fluentd is an open-source data collector that provides a unified logging layer, enabling you to collect, parse, transform, and output logs from various sources to multiple destinations. It is written in Ruby and highly pluggable.

Pandora FMS offers comprehensive monitoring for networks, servers, applications, and cloud environments within an enterprise context. It provides a flexible and scalable platform for IT operations teams to ensure business continuity and optimize performance through detailed insights, alerts, and reporting.

Nagios Core is a powerful, open-source monitoring system designed to keep a vigilant eye on your IT infrastructure. It provides comprehensive surveillance of systems, networks, and hardware, ensuring critical services remain operational and alerting administrators to potential issues before they impact end-users.

Zabbix is a robust enterprise-class open-source solution for real-time monitoring of millions of metrics collected from tens of thousands of servers, virtual machines, and network devices. It provides a highly flexible and scalable platform for comprehensive IT infrastructure monitoring.

Google Chrome Developer Tools are an indispensable suite of web development and debugging tools integrated directly into the Chrome browser, empowering developers to inspect, debug, and optimize their websites and web applications.

Conky is a highly configurable, lightweight system monitor that displays system information directly on your desktop. It is known for its extensibility and ability to show a wide range of data.

Nmap is a free and open-source utility for network discovery and security auditing. It utilizes raw IP packets to determine what hosts are available on the network, what services (application name and version) those hosts are offering, what operating systems (and OS versions) they are running, what type of packet filters/firewalls are in use, and dozens of other characteristics. It is command-line driven, though official GUI versions are also available.

Process Hacker is a free and open-source system utility that provides in-depth monitoring and manipulation of processes, threads, and kernel objects.

Rainmeter is a free and open-source desktop customization application for Windows. It allows users to display various types of information, such as system metrics, time, weather, and RSS feeds, directly on their desktop through highly customizable 'skins'. It's a popular tool for creating personalized and functional desktop interfaces.