Free process monitor software for linux

UPS monitor is a graphical monitoring application that lets users watch a your UPSs status in real time.
Main features:
- Saves your session if UPS switches to battery power
- Warns you when power is critically low
- Lets you monitor networked UPSes
- Remembers configuration and restarts when you log on
- Extremely easy to use

Orange Monitor is a system monitoring theme for SuperKaramba.
Main features:
- CPU Load and Temperature (mbmon)
- Used RAM
- Used Space on hda and hda2 (customizable)
- Bandwidth Spent (bars are customizable , Incoming gets full @ 1GB and Outgoing @ 256MB by default)
- XMMS Controls (xmmsctrl)
Inspired on:
- Yaxay Skin for Winamp3
- Pod Icons for LiquidWeather karamba
- SystemTux Karamba

FTP Monitor is a simple panel applet, which monitors incoming connections to ftpd(vsftpd/ncftpd/pure-ftpd/proftpd) and generates passive popups.
For pure-ftpd, ncftpd, proftpd it acts as a frontend to pure-ftpwho, ncftpd_spy and ftpwho respectively. For vsftpd, it looks in output of ps -fe.
Enhancements:
- Update the change in ftp daemon (or path) withour requiring a restart
- Fixed the bug (introduced in 0.70) that FTP status will not update
- For large panels, the icon is now centered

vSMP Monitor is the SuperKaramba theme that i have been modifying with time and finally decided to post it.

It is a melting pot of many other themes which i have mentioned in the theme file. Hope you like it.

** Note background is from unknown origin all credit goes to the author!

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.

hfishs monitor is based on this theme (http://www.kde-look.org/content/show.php?content=47852), I made some changes to best fit to my laptop.
Includes support for two cpus, two ethernet interfaces, ram, swap and two partitions, nvidia gpu temp.
Enhancements:
- Added nVidia GPU temp support

IPmonitor just a simple IP or url monitor, using PING command to check if the given addresses are alive.