Free battery monitor software for linux

battery_monitor is a small battery monitoring program for Linux, that you can run in the background from your desktop session or launch from the boot scripts. battery_monitor is designed with simple goals in mind and provides acoustic and/or visual alerts when your battery level is low or when it is fully charged, so you can take apropiate actions.
Compilation and installation
To compile and install battery_monitor you need several components installed on your computer:
C compiler (probably GCC) and the standard C libraries and headers.
POSIX threads libraries and headers (pthread.h).
X11 libraries and headers.
xine libraries and headers.
make tool.
To compile the program, once you have installed everything needed, run make from the source code directory. To install it, run make install after compilation. This last step may require superuser privileges depending on the selected installation directory. The following parameters may be useful while compiling and installing:
CC: It lets you specify the C compiler name instead of gcc.
CFLAGS: You can use it to change the optimization level and/or specify additional header directories by using extra -I arguments.
LDFLAGS: In case the compiler cant find some of the required libraries, use this parameter to pass additional -L arguments in the link step.
PREFIX: The default prefix is /usr/local. If you change this parameter you should change it in both the compilation and the installation step. Its only used in the installation step for now, but this may change.
DESTDIR: Useful for package maintainers, this lets you specify a fake root directory in the installation step.
Compilation and installation parameters are appended to the make command in variable assignment form. For example: make install PREFIX=/usr DESTDIR=/tmp/fake_rootdir.
Enhancements:
- Several bugs have been corrected.
- They surfaced with recent releases of the Xorg X server, and made the program behave incorrectly when displaying signs.
- The underlying sign code has been rewritten, and the program is now lighter on resources as a collateral effect. In addition, CMake support has been added to the build system.

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.

compact system monitor is a small and compact system monitor for SuperKaramba.

Credit where credit is due, i think i stole the icons from Borealis? Nice are they not? And the idea from someone else.

The theme can be changed somewhat by editing the theme and comenting out some lines.

Hope you like it! Its my first!

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.

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

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

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.

CrystalMonitor is SuperKaramba theme with:

* Guess distro
In .py file is link to files, where are basic infos about your distro. .py file finds sitably file and only writes out data to CrystalMonitor.

* Kernel monitor
Display your kernel version

* Cpu monitor
Display your procesor name, cpu cache and usage

* Ram, swap monitor
Display how many MB memory has your computer and how many MB of its is in usage

* Hdd monitor
Display Home and Root particions

* TimeMonitor
Day, Date and time monitor

* Procesor temperature and MHz monitor (ACPI)
Its working only if the ACPI and the frequency scaling are enable.

* Network (downstream/upstream) monitor (5.0 and newer)

* 12 themes (4.0 and older)