Open Source Network Monitoring Software

YAJSW is an Apache licensed pure java alternative for tanuki java service wrapper. It implements a multitude of additional functions and can be easily extended with groovy scripts. JSW configurations can be easily ported.

NSClient++ is a windows service that allows performance metrics to be gathered by Nagios (and possibly other monitoring tools). It is an attempt to create a NSClient and NRPE compatible but yet extendable performance service for windows.

An Enterprise-Grade Network Management Application Platform that is 100% Free and Open Source Software.

SNMP Trap Translator is used to 'translate' traps received from the NET-SNMP / UCD-SNMP snmptrapd trap daemon into easy to understand messages. Git repository, downloads and support has been moved to https://github.com/snmptt/snmptt.

jNetMap is a graphical network monitoring and documentation tool. It will ping all registered devices every x minutes, updating the status according to the result of the ping. Requires Java 8 or higher

NagiosQL is a professional, web based configuration tool for Nagios 2.x/3.x/4.x. It is designed for large enterprise requirements as well as small environments. Any Nagios functionalities are supported.

A java wrapper for popular "libpcap" and "WinPcap" libraries. Accurate full API translation. Packet buffers delivered with no copies. Send custom packets, gather statistics. Comprehensive and easily extensible DPI engine.

The pimped Apache status makes the Apache server status readable, sortable and searchable. The pimped Apache status can merge the status of several servers that opens the possibility to identify the troubleshooter even in a loadbalanced website. The webbased tool offers a multilanguage, skinable interface with a built-in updater. In several views you see most requested pages, vhosts, used methods, IPs that make the most requests and more. All views are sortable tables you can filter by a keyword and are available as API Request too to get its data as CSV, XML or JSON. Compatible with PHP 7+8 (and should run on PHP 5.x - but is not supported).

SIGAR (System Information Gatherer and Reporter) is a cross-platform, cross-language library and command-line tool for accessing operating system and hardware level information in Java, Perl and .NET.

Tracks usage of TCP/IP network subnets and builds html files with graphs to display utilization. Charts are built by individual ip. Color Codes HTTP, TCP,UDP, ICMP, VPN, P2P, etc. Click on the release notes icon for the latest release for more info.

IP Monitor is a simple application which monitors your public IP address for changes and lets you set different kinds of notifications such as email, audio, pop up or executing a command. It can also run in background as a Windows service or Linux/Mac daemon.

IPplan is a web based, multilingual, IP address management, DNS and tracking tool based on php 4, simplifying the administration of your IP address space. IPplan can handle a single network or cater for multiple networks with overlapping address space.

BASE is the Basic Analysis and Security Engine. It is based on the code from the Analysis Console for Intrusion Databases (ACID) project. This application provides a web front-end to query and analyze the alerts coming from a SNORT IDS system.

jpcap is a set of Java classes which provide an interface and system for network packet capture. A protocol library and tool for visualizing network traffic is included. jpcap utilizes libpcap, a widely deployed system library for packet capture.

PHP Server Monitor is a script that checks whether your websites and servers are up and running. It comes with a web based user interface where you can manage your services and websites, and you can manage users for each server with a mobile number and email address. For services a connection will be made to the entered ip or domain, on the given port. This way you can check if certain services on your machine are still running. To check your IMAP service for example, enter port 143. For websites you can enter a link and it will check the HTTP status code. If the HTTP status code is in the 4xx range or a timeout, it means an error occurred and the tool will start sending out notifications. You can also set a regular expression to match for content on the page itself. Each server has its own settings regarding notification. You can choose for email, text message (SMS) and Pushover.net notifications. For more info please visit http://www.phpservermonitor.org

VNCed allows admins and teachers to monitor multiple workstations at the same time using VNC. There are a number of other VNC releated downloads available including MSI Creators/Installers for UltraVNC, Win32 version of RFBProxy and pyvnc2swf-py2exe

NConf is a PHP based web-tool for configuring the Nagios monitoring software. It differs from similar tools by offering enterprise-class features like templates, dependencies and the ability to configure a large-scale, distributed Nagios topology.

Master/node to gather and graph "everything" on your systems using Tobi Oetiker's rrdtool. It can optionally warn your surveillance software. This software package was originally called LRRD. The project. Please see http://munin-monitoring.org/

Flexible web-based firewall log analyzer, supporting netfilter and ipfilter, ipfw, ipchains, cisco routers and Windows XP system logs, and mysql or postgresql database logs using the iptables ULOG or NFLOG target of netfilter others mapped to the ulogd format with a view. Fully supports IPv6 for database logs, and netfilter and ipfilter system file logs. Also supports Maxmind's GeoIP version 2 location databases. For Linux, FreeBSD, OpenBSD, Solaris, OSX,etc.

Hyperic is application monitoring and performance management for virtual, physical, and cloud infrastructures. Auto-discover resources of 75+ technologies, including vSphere, and collect availability, performance, utilization, and throughput metrics.

SNMP v1/v2c/v3 engine and apps written in pure-Python. Project moved to GitHub: https://github.com/etingof/pysnmp

Switchmap is a Perl program that creates HTML pages that show information about a set of Ethernet switches. It uses SNMP to gather data from the switches. Samples of Switchmap output can be found on the Project home page.

phpLDAPadmin is a web-based LDAP administration tool for managing your LDAP server. With it you can browse your LDAP tree, view LDAP schema, perform searches, create, delete, copy and edit LDAP entries. You can even copy entries between servers.

NOTE: Project has moved to github, including file downloads. SharpPcap is a cross-platform packet capture framework for the .NET environment, based on the famous pcap / WinPcap libraries. It provides an API for capturing, injecting, analyzing and building packets using any .NET language such as C# and VB.NET.

WebInject is a tool for automated testing of web applications and web services. It can be used to test system components with HTTP interfaces, as a test harness to create a suite of functional and regression tests, or for service-level monitoring.