| Aware 
The Aware
project is an effort to create a software framework to measure,
monitor, and control computer system resources. Aware is intended to
enable system administrators tune system variables, set
monitoring/security alarms and build adaptive distributed systems.
Aware modules may be linked into applications making them 'aware' and
able to participate in the larger managed system. Ultimately,
multiple systems will monitor themselves and others, cooperating to
make decisions to optimally tune performance, proactively enhance
security and compensate for faults. The Aware software is a high
performance distributed event processing framework built for systems
management. It comes with probes for the common network services and
system resources. Additionally, Aware allows the cross-correllation of
many different streams of information.
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| AWStats
AWStats is a free powerful and featureful tool that generates advanced web, streaming, ftp or mail server statistics, graphically.
This log analyzer works as a CGI or from command line
and shows you all possible information your log contains, in few graphical web pages.
It uses a partial information file to be able to process large log
files, often and quickly.
It can analyze log files from all major server tools like Apache log
files (NCSA combined/XLF/ELF log format or common/CLF log format),
WebStar, IIS (W3C log format) and a lot of other web, proxy, wap,
streaming servers, mail servers and some ftp servers.
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| Babel
Babel is an enterprise-grade
auditing system to manage a consistency on security policy between
different systems in a non-homogeneus architecture. Babel allows to
manage very different operating systems, like AIX, Solaris, Windows
2000, Windows XP, Linux, *BSD or HPUX.
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| Big Sister
Big Sister originally was the
Big Sister network monitor. Now, multiple projects in the realm of
system management and monitoring are run under the label Big Sister.
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| GroundWork
GroundWork Open Source is the undisputed leader
in open source systems and network monitoring and management software,
providing the widest coverage at the lowest possible cost. We bring all
the advantages of open source software to business-critical network and
systems management and combine those with superior functionality,
documentation, and professional support to give you unprecedented
visibility of your entire IT infrastructure.
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| Hobbit
Hobbit is a system for
monitoring servers and networks. It has a great deal of inspiration
from the Big Brother monitor, but unlike Big Brother it is designed to
work well whether you need to monitor small network with just a handful
of hosts, or large networks with thousands of hosts.
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| Hyperic HQ 
Hyperic HQ is the robust IT
management platform and web-based portal that lets you manage your
systems, services, servers, and applications - and it's freely
available under an open source license, the GNU GPL.
Hyperic HQ Open Source features monitoring, alerting, auto- discovery,
auto-inventory, performance monitoring over time, and the ability to
determine the health of your IT environment with pinpoint accuracy.
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| Iperf
While tools to measure network performance, such as ttcp, exist, most are
very old and have confusing options. Iperf was developed as a modern alternative
for measuring TCP and UDP bandwidth performance.
Iperf is a tool to measure maximum TCP bandwidth, allowing the tuning of
various parameters and UDP characteristics. Iperf reports bandwidth, delay
jitter, datagram loss.
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| jManage
jManage 2.0 is an open
source application management platform, which provides a centralized
console for managing application clusters and distributed-application
environments. jManage platform provides advanced features like
Dashboards, Alerts, Graphs, Connectors, Security, SNMP support and more.
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| Nagios
Nagios is a host and service monitor designed to inform you of network
problems before your clients, end-users or managers do. It has been
designed to run under the Linux operating system,
but works fine under most *NIX variants as well. The monitoring daemon
runs intermittent checks on hosts and services you specify using
external "plugins" which return status information to Nagios. When
problems are encountered, the daemon can send notifications out to
administrative contacts in a variety of different ways (email, instant
message, SMS, etc.). Current status information, historical logs, and
reports can all be accessed via a web browser.
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| ntop
ntop is a network traffic probe that shows the
network usage, similar to what the popular top Unix command does. ntop is based
on libpcap and it has been
written in a portable way in order to virtually run on every Unix platform and
on Win32 as well.
ntop users can use a a web browser (e.g.
netscape) to navigate through ntop (that acts as a web server) traffic information
and get a dump of the network status.
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| OpenNMS
OpenNMS is the world's first enterprise grade network management platform developed under the open source model.
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| openSIMS
openSIMS is a Security
Infrastructure Management Systems distributed as an open source project
through SourceForge, using a modified Mozilla Public License. OpenSIMS
ties together the open source tools used for security event management
into a common infrastructure. These tools include NMap, Snort, and many
others. The best way to experience openSIMS is by downloading the
openSIMS liveCD.
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| OpenSMART
OpenSMART, the Open (System|Source) Monitoring And Reporting Tool, is a
Open Source System Monitoring Software to monitor problems on your
servers and to report some important data about your servers. It is
somehow similar to Tivoli or OpenView.
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| Pandora
Pandora 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, your
software, your multilayer system and of course your Operating System |
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| RRDtool
The industry standard data logging and graphing application. Use it to
write your custom monitoring shell scripts or create whole applications
using its Perl, Python or PHP bindings.
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| SmokePing
SmokePing is a deluxe latency measurement tool. It can measure, store
and display latency, latency distribution and packet loss. SmokePing
uses RRDtool to maintain a longterm data-store and to draw pretty
graphs, giving up to the minute information on the state of each
network connection.
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| SNARE
SNARE (System iNtrusion Analysis and Reporting Environment) is a series
of log collection agents that facilitate centralised analysis of audit
log data.
Agents are available for Linux, Windows, Solaris, IIS, Lotus Notes,
Irix, AIX, ISA/IIS + more
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| Swatch
An active log file monitoring tool.
Swatch started out as the "simple watchdog" for activly monitoring
log files produced by UNIX's syslog facility. It has since been evolving into
a utility that can monitor just about any type of log.
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| Zabbix
ZABBIX offers
advanced monitoring, alerting and visualisation features today which
are missing in other monitoring systems, even some of the best
commercial ones.
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| Zenoss
Zenoss Core is an
enterprise-grade network and systems monitoring product that delivers
the functionality IT operations teams need to effectively manage the
health and performance of their entire infrastructure through a single,
integrated package.
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The List 
