Free snmp management and monitoring tools software for linux

Manage your network with a free Network Monitoring Software application.
Network Management Tool is an organized way to manage your network. 100% web-based network management.
Manage your network devices with ease. 100% Free Network Managment Software! Manage all your network devices, routers, switches, firewalls, hubs, and more.
Enhancements:
- A display bug that occurred when viewing the comments on a device was fixed.

Snmp Monitor provides a SNMP router and monitoring alarms.

Snmp Monitor is a Scotty extension to monitor SNMP variables on the net. If there are changes to the routers, etc., it can send you a message on your cellular, by email, or via the screen.

Argus Monitoring System software is a system and network monitoring application.
It will monitor nearly anything you ask it to monitor (TCP + UDP applications, IP connectivity, SNMP OIDS, Programs, Databases, etc).
It presents a nice clean, easy to view web interface that will keep both the managers happy (Red Bad. Green Good.) and the techs happy ("Ah! thats what the problem is").
It can send alerts numerous ways (such as via pager) and can automatically escalate if someone falls asleep.
Main features:
- It is open-source available at no charge.
- It has a clean and intuitive web interface.
- The web pages can easily be understood by non-technical people.
- It can generate graphs of what is going on.
- It can monitor network connectivity (Ping test)
- It can monitor TCP/UDP ports
- It can monitor a wide variety of TCP/UDP applications (HTTP, SMTP, RADIUS, ...)
- It can monitor the output or exit code of a program (Program test)
- It can monitor the content of a web page (such as a shopping cart application)
- It can monitor the authoritativeness of a nameserver
- It can monitor SNMP OIDs (such as BGP status, UPS voltage, room temperature, ...)
- It can monitor the results of SQL queries
- It can monitor itself.
- It can be extended to monitor things that the author didnt think of
- It can notify someone (or many people) when something happens
- It can escalate, and notify someone else, if things dont get fixed.
- It can not alarm for known downtime (maintenance overrides)
- It will summarize and rate-limit multiple notifications to prevent paging-floods.
- It keeps historical statistics, for analysis or SLA verification.
- It scales well and can monitor many, many things.
- It can restrict users to viewing only certain items (user "views")
- It can restrict users access to certain features (access control)
- It can support IPv6.
- It can support SNMPv3.
- It can support l10n for your native language.
- It can support redundant multi-server configurations.
Enhancements:
- This release offers improved performance and scalability, adds support for additional tests, and adds support for failover and redundancy.

Aazmat Monitor is a SuperKaramba system monitoring widget.

It was adapted to meet office theme and added a few new monitors all of them are built into there own theme file so you can place them were you like.

Pandora are a Free Software set of programs, set under the GPL license, that allows to analyze in a visual way status and performance of several parameters from different Operating Systems, servers, applications and hardware systems as Firewalls, Proxies, Data Bases, Web Servers or Routers. All integrated into an open and distributed architecture.

Pandora can be deployed in every Operating System. You have an agent for every platform. Pandora can monitor hardware systems with TCP/IP Stack, as load balancers, routers, switches, printers and so on.

Pandora has six components: Pandora Data Server, Pandora Network Server, Pandora SNMP Console, Pandora Agents, Pandora Database and Pandora Web Management System (Web Console).

Pandora Servers and SNMP Console

They are the recipient of bundles of information and the generators of alerts; they are the brain of the system. We can have several servers for very big systems or a single server. They are developed in Perl and works under any platform, with the required modules. Nevertheless its "official" platform is GNU/Linux. They also insert the gathered data into the Database. You can have several Pandora Servers connected with the same Database.

Pandora Web Console

It allows to manage the system and to operate with it; its the user interface of Pandora. We can have several Web Consoles in the same implantation. It is developed in PHP and leans on a Data Base and a Web Server, being able to work in any platform: GNU/Linux, Solaris, Win2000, AIX and others.

Pandora Database

Core module of Pandora (as you can see in the architecture overview). In this database resides all the information of the enterprise, for example, all data gathered by agents, all configuration defined by administrator, all events, incidents, audit info... At this moment, only MySQL DataBase is supported. More Databases in the future.

Pandora Agents

They can monitor any numeric parameter, boolean states, strings or numerical incremental data and/or condition. They have a centralized architecture based on lightweight design for agents (shellscript, wsh, perl) and light agents to collect data. They support all type of platforms (Microsoft, AIX, Solaris, GNU/Linux, IPSO, FreeBSD, etc) because the agents are completely free software, and they communicate using SSH, FTP, NFS or other good way, using an XML container to transport data.

Very Simple Network Monitor is a complete rewrite of project PHP Monitoring.
Its by default capable of monitoring via ping, UDP and TCP checks. Has builtin plugin system so customized scripts can be used to monitor whatever you like eg. oracle tablespaces, diskspace whatever; Alarms are also generated via plugins, it has standard EMAIL alarm, but can be customized to have snmp traps, or sms gateways or whatever.
Can store uptime reports in mysql and generated reports and uptimes in % availability per service.
Has one centralised html monitoring page with all alarms together for good overview.
Enhancements:
- reporting bug fixed
- alarm causes nmonitor to be locked bug fixed
- some other minor stuff I cant remember
- removed some typos from INSTALL doc:)