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ZABBIX is a 24×7 monitoring solution without high cost.ZABBIX is software that monitors numerous parameters of a network and the health and integrity of servers. ZABBIX uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. ZABBIX offers excellent reporting and data visualisation features based on the stored data. This makes ZABBIX ideal for capacity planning.

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Darkstat is a network statistics gatherer.Effectively, it’s a packet sniffer which runs as a background process on a cable/DSL router, gathers all sorts of useless but interesting statistics,and serves them over HTTP.

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“Munin” means “memory”.Munin the tool surveys all your computers and remembers what it saw. It presents all the information in in graphs through a web interface. Its emphasis is on plug and play capabilities. After completing a installation a high number of monitoring plugins will be playing with no more effort. Using Munin you can easily monitor the performance of your computers, networks, SANs, and quite possibly applications as well. It makes it easy to determine “what’s different today” when a performance problem crops up. It makes it easy to see how you’re doing capacity wise on all limited resources.

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Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box. All of this is wrapped in an intuitive, easy to use interface that makes sense for LAN-sized installations up to complex networks with hundreds of devices.

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Cacti is a complete network graphing solution designed to harness the power of RRDTool’s data storage and graphing functionality. Cacti provides a fast poller, advanced graph templating, multiple data acquisition methods, and user management features out of the box. All of this is wrapped in an intuitive, easy to use interface that makes sense for
LAN-sized installations up to complex networks with hundreds of devices.

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loadavg is a simple and lightweight method of monitoring load, memory usage and transfer throughput on a Linux server.Every method of monitoring has an impact on the system being monitored — loadavg is designed to keep that impact as low as possible. It generates HTML & CSS charts, thereby shifting much of the work from the server to the client — your web browser.

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