Free how to monitor email software for linux

NAT Monitor is a tool to monitor hosts bandwidth usage in a Linux-NAT network.

A daemon collects data and clients display them (currently a GTK app with graph and a text version). It detects new hosts, saves up to 12 hours of data, and has a nice summary statistic.

Skipole Network Monitor project is a simple network monitor with built in web server.

It allows the user to input host IP addresses, it then pings these hosts every five minutes and displays their status via a built-in web server, on port 8000.

So calling http://your_pc_address:8000 will display pages showing green, yellow or red host or group symbols.

Each host is pinged four times every five minutes, and symbols are displayed as:

green : if three or four pings are successfull
yellow : if only one or two are successfull
red : if all four fail

As well as hosts, group symbols are displayed, and can be opened to show hosts, or sub-groups nested within. The operator can create groups, and sub-groups via the gui.

Hardware Monitor is a multi-purpose, beautiful system-monitoring applet.
The Hardware Monitor applet is an applet for the GNOME panel which tries to be a beautiful all-around solution to system monitoring. It also strives to be user-friendly and generally nice and sensible, integrating pleasantly with the rest of your GNOME desktop.
Includes different viewers, including a flame effect, allows multiple devices to be monitored in the samme applet, uses smooth updating, polished graphs, clean HIG-compliant interface.
Main features:
- A graphical view where each monitor is represented by a (time, measurement) colored curve
- A bar-plot view with a horizontal bar per monitor
- A column view with a column (time, measurement) diagram for each monitor
- A textual view which simply lists the monitors and the currently measured values
- A flame view which produces spiffy flames, the sizes of which are determined by the values of the monitored device
And the applet supports monitoring the following hardware characteristics:
- CPU usage (all CPUs, or one at the time) - niced background processes such as SETI@home are automatically ignored
- Memory usage - cache and buffers are automatically ignored
- Swap usage
- Load average
- Disk usage (or disk space free)
- Network throughput (Ethernet, wireless, modem, serial link), either incoming or outgoing or both
- Temperatures from internal sensors (e.g. system board and CPU temperatures)
- Fan speeds from internal sensors

The Monitor application, which consists of 2 parts, a MonitorServer (linux daemon) and a MonitorClient (java gui), will enable the user to monitor and log server process, memory, network and cpu information of multiple servers at a time.

The MonitorClient part is written in Java and is able to connect to one or more Servers that are running the MonitorServer part of the Monitor application.

The client will poll the servers at user specified intervals and will provide a graphical representation of the recources (mem, cpu, nic and process information) of one server at a time.

In addition the MonitorClient is able to log the information of all the servers, each server in a different logfile in a coprehesive CSV format.

The MonitorServer is a seperate application written in C++ and linked to omniORB4 to minimize the load it imposes on the server that is beeing monitored. When the MonitorServer is not beeing polled by a MonitorClient it sits idle.

The client will of course run on any platform that supports Java, but the server currently only supports Linux, kernels 2.2, 2.4, 2.6 and possibly (not tested) 2.0 and >2.6.

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.

Link Monitor Applet is a GNOME Panel Applet displaying the round-trip time to one or more hosts in a bar graph.
Main features:
- full ICMP and ICMPv6 support
- configurable scale and delays
- HIG 2.0 compliance

Computer Temperature Monitor is a little applet for the GNOME desktop that shows the temperature of your computer CPU and disks on screen.

It also allows you to log temperatures to a file.

You can set alarms to notify you when a tempertature is reached.

Several monitors can be added to the panel to monitor different sensors. It is designed to look like CPU Frequency Gnome applet, so they match each other on panel.

It is released under the terms of the GNU General Public License.

This applet used to be called Laptop Temperature Monitor

Bandwidth Monitor NG is a small and simple console-based live bandwidth monitor.
I have sucessfully tested on (if you have any other sucessfull or unsucessfull, please mail me):
Linux 2.4, Linux 2.6
FreeBSD 4.8, 5.3
MacOS X 10.1, 10.2, 10.3
Solaris 10 64bit x86
SunOS 5.9 sparc Solaris 9
OpenBSD 3.4, 3.6
NetBSD 1.6.1, 2.0
IRIX64 6.5
Main features:
- supports /proc/net/dev, netstat, getifaddr, sysctl, kstat and libstatgrab
- unlimited number of interfaces supported
- interfaces are added or removed dynamically from list
- white-/blacklist of interfaces
- output of KB/s, Kb/s, packets, errors, average, max and total sum
- output in curses, plain console, CSV or HTML
- configfile
Enhancements:
- Changes in this release include curses2 output (a nice bar chart), disk input for BSD, Mac OS X, Linux, and Solaris, Win32 network bandwidth support, use of autotools, and lots of fixes.