Nagios is a host and service monitor designed to inform you of network problems before your clients, end-users or managers do. Read more hot
OpenNMS is a scalable enterprise-class network monitoring and management platform, leveraging Java, XML/XSL, C/C++, and SOAP to get the job done. Read more hot
Pandora FMS is a monitoring application to watch systems and applications, that allows to know the status of any element of your systems, watch for your hardware, software, multi-layer system and Operating System.
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Specto is a desktop application that watches configurable events (such as website updates, emails, file and folder changes, system processes, etc) and then triggers notifications. Read more hot
AggreGate Network Manager
(shareware) AggreGate Network Manager is a network/application/performance monitoring platform. It tightly integrates with other smart building management systems, such as those for physical access control, HVAC, lighting, and time/attendance control.
Aimwatch is a packet sniffer designed to reconstruct AOL Instant Messenger and ICQ information by passively collecting packets from the network.
akk@da is a simple network monitoring system designed for small and middle size computer networks. Its purpose is to quick detect system or network fault and to display information about detected problem for administrator.
Alarm Pinger is a tool which monitors various IP devices by simple ICMP echo requests.
AlarmMon is an alarm monitoring system for TCP/IP-based networks. It consists of client part called "alarm", server part called "alarmsvr" and of several agents. All parts of the system works with one central registration database.
Angel Network Monitor
a simple yet useful tool to monitor the services on your network. Technically speaking, it's a Perl program that runs every 'n' minutes (usually fired from your cron) and calls different perl subprograms (referred as
aNTG collects and displays network traffic statistics on a Linux-ish machine.
aps is a small tool for analyzing network traffic.
Argo is a monitoring system for the Xen hyperviser, comprised of a network server which runs upon your Xen host and any number of clients which connect to that server over a socket.
Argus is a fixed-model Real Time Flow Monitor designed to track and report on the status and performance of all network transactions seen in a network traffic stream. Read more
Argus Monitoring System
a system and network monitoring application. It will monitor nearly anything you ask it to monitor (TCP + UDP applications, IP connectivity, SNMP OIDS, etc).
ArgusEye is a GUI for the Argus network auditing suite. It aims at supporting daily work by providing a graphical user interface for traffic analysis and configuration management.
arpalert uses ARP address monitoring to help prevent unauthorized connections on the local network.
Arphound is a tools that listens to all traffic on an ethernet network interface, and reports IP/MAC address pair, as well as events such as IP conflict, IP changes, IP addresses with no RDNS, various ARP spoofing, and packets not using the expected gateway. Reporting is done to stdout, to a specified file and/or to syslog.
ArpMonitor logs any ARP request to and from your machine or network.
ARPView is a graphical user interface module for arpalert for watching the network discovery as it happens.
arpwatch monitors mac adresses on your network and writes them into a file.
ArsDigita MTA Monitor
designed for monitoring a group of mail transport agents administered by one or more administrators. The ArsDigita MTA Monitor wakes up every five minutes (configurable in the configuration file mmon.ini) and monitors both SMTP port response and MTA throughput
aupcheck helps to monitor NGI F4 Flat Internet connections.
AutoScan-Network is a network discovering and managing application. No configuration is required to scan your network. The main goal is to print the list of connected equipments in your network.
a network and server monitoring program. It is designed to support large, arbitrarily complex networks of computers, and stillprovide feedback in a very timely fashion
Bandmin is a simple set of perl scripts designed to record and log ip accouting data. It can also display the data that it collects in a set of html pages. Bandmin currently has support for iptables, ipchains, UserIPAcct, ipfwadm, ipf, and ipfw.
Bandwidth Monitor NG
a small and simple curses-based bandwidth monitor for Linux or other systems with /proc/net/dev or net-tools netstat
BanFromLog is a simple script to log any illegal user attempt of your SSHD daemon from the auth.log file.
Bartlby is a network and system monitor completely written in C, to provide a scaleable framework with the ability to monitor networks of various sizes. Bartbly consits of a core deamon, serveral plugins and the web-gui (php-extension).
a web based system management tool which delivers information on the status of networked systems in a simple and easy to use manner
BENIDS is a pcap-based NIDS for Linux. It uses its own XML rule file format which allows arbitrary, complex boolean matching conditions.
Benson Distributed Monitoring System
Benson Distributed Monitoring System is an automated messaging and monitoring system designed to ease the life of a network, system,and database administrator. The communication portion is implemented in CORBA (currently BOA, and MICO), and thebackend logic and functionality is perl.
(commercial) Big Brother is a combination of monitoring methods. Unlike SNMP where information is just collected and devices polled, Big Brother is designed in such a way that each local system broadcasts it's own information to a central location. Simultaneously, Big Brother also polls all networked systems from a central location.
an SNMP-aware monitoring program consisting of a Web-based server and a monitoring agent. It runs under various Unixes and Windows
a collection of four perl scripts useful to monitor a network
Blinky Network Usage Monitor
a graphical network usage monitor for Linux and Solaris. It displays the usage of one or more network interfaces using blinking lights (as in the dial-up system tray icon in Windows)
Blitzed Open Proxy Monitor
Blitzed Open Proxy Monitor is an open-source open proxy monitor, designed for use with hybrid-based ircds, although it can be used with slight modification on any server which has +c to show connects to opers and that supports KLINEs.
bmon is a portable bandwidth monitor and rate estimator running on various operating systems. It supports various input methods for different architectures. Various output modes exist including an interactive curses interface, lightweight HTML output but also formatable ASCII output.
BOINCTail displays the status of jobs running in the BOINC environment in a 'tail-like' way. That way, one doesn't need an X server to be able to monitor (for example) setiathome, lhcathome, etc.
bsnmp-regex is a module for bsnmpd that allows the creation of SNMP counters from logs, program output, or other text data. The resulting data can then be queried or graphed with the usual SNMP tools.
Bungmeter is fork of fnetload. It's a small network graph monitor that displays a graphical representation of the the data flowing in and out of a given network interface. It's goal to be small and lightweight, yet very useful.
Butterfly ISP Edition
(commercial) a timing system designed for environments in which time spent on the Internet is charged for
Bwmeas is a simple tool that continuously measures the number of packets and the number of bytes that are received in a specified time-interval. It can furthermore compute and print the average bandwidth for each such time-interval.
CaiCai is a system for monitoring whether certain hosts are dead or alive. It examines different services/aspects (DHCP, Ping test, etc), gives some stats on those and has an (user-defined) sound alarm in case something goes wrong.
a comprehensive software suite developed by CAIDA to collect and analyze data from passive Internet traffic monitors, in real time or from trace files. Realtime monitoring support includes system network interfaces (via libpcap), FreeBSD drivers for Apptel POINT (OC12 and OC3 ATM) and FORE ATM (OC3 ATM) cards, and support for Linux drivers for WAND DAG (OC3 and OC12, POS and ATM) cards
Caligare Flow Inspector
(commercial) CFI (Caligare Flow Inspector) is a tool for processing and evaluating network traffic, using network flows export statistics sent by a router. It is also a user-friendly application used for network diagnostics. It has the added ability of real time monitoring and data analysis, in which you can find and locate network traffic transmitted over the local host and local networks.
CBan displays the current traffic on the selected interface.
CBLM is a high performance latency (one-way and round-trip), packet loss and jitter monitoring probe. When run on two or more servers, a full mesh of connections is automatically setup between the probes. The full mesh of connections are used to transmit UDP packets between the probes. Statistics are collected and stored within a MySQL database.
CeMoSShE (CEntral MOnitoring in a Simple SHell Environment) is a simple, lightweight (both in size and system requirements) server monitoring package designed for secure and in-depth monitoring of a handful of typical/critical Internet systems.
Charles Web Debugging Tool
Charles is an HTTP proxy / HTTP monitor that enables a developer to view all of the HTTP traffic between their machine and the Internet. This includes requests, responses and the HTTP headers (which contain the cookies and caching information).