Free real spy monitor software for linux

GKrellm SNMP Monitor project is a plugin for GKrellM that lets you easily monitor SNMP vars.

Some examples are server load via UCD-SNMP daemon or ambient temperature via router environment MIB.

Linksys Monitor provides a Linksys logging and dynamic DNS IP update utility.
Linksys Monitor is a POSIX-compliant application used to monitor and react to device activity of Cisco Linksys devices.
Main features:
- logging of all inbound and outbound network connections to a file (with negative filtering capabilities)
- email notification of any inbound and outbound network connection (with negative filtering capabilities)
- IP address updates to DNS services (dynamic DNS) when the device IP address changes
- email notification of IP address changes
- periodic validation and DNS service updates of the device IP address (via Web)
- highly and easily configurable, but with a very good set of default values.
Enhancements:
- Code cleanup and consolidation.
- Fixed a number of bugs related to the parsing of html responses in web IP checks and IP address updates.
- Removed the manner in which the IP address is determined from the logs. This proved too unreliable and caused to many false positives. Now it determines the IP address solely from the web mannner.
- Fixed an issue when running it on a SUSE box (recvfrom() socket call not supported).

Virtual server monitor (vsmon) is a monitoring tool for Linux-VServer that gives a system administrator a global view of all vservers running on his park.
For now, it does not offer control over the vservers life cycle (e.g. provisioning, start, stop, and restart operations). To use vsmon, you must deploy one backend on each vserver host and one frontend, preferably in its own vserver.
Enhancements:
- The frontend was reworked to display a summary of all hosts.
- An owner can be assigned to each vserver.
- The backend can be used on hosts without Linux-VServers, and it no longer obtains IP addresses.
- The libdnet dependency was removed.
- The parsing of /proc/"pid"/stat now works for kernel 2.6.18.
- A Nagios plugin was added, which enables the use of the vsmon backend to monitor a host disk, memory, and swap.
- The plugin monitors all mount points according to an "intelligent" algorithm, which determines warning and critical thresolds as a function of the total size of the partition.

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)

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.

Simple Monitor is a SuperKaramba theme inspired by the simple but effective "Very Simple Monitors" theme by the user humanthing. Some values are not displayed properly though in Very Simple Monitors (network values and IP). This could be because of different setups. My computer is pretty standard so my theme should function properly on most pcs. http://www.kde-look.org/content/show.php?content=48973
I like a tight and clean desktop, so I simplified the idea even more. This theme is showing all basic information, and nothing more.
Main features:
- Processors type
- Processor speed
- Processor load (number and graph, for one proc)
- Processor Temperature
- Amount of ram used / amount of ram
- amount of swap used / amount of swap
- amound of HDD space used / amount of HDD space total (for "/root" and "/home")
- HDD temperatue (for "/hda", I could add another drive if requested)
- Computer name
- Computer ip
- Network load (up- and download, values and graph)
- Amount of transfered data thrue internet (up- and download) since last boot
Enhancements:
- Made the three blocks clickable.
- The CPU block opens Processor information
- The Memory block opens KsysGuard (youll need to have it installed to be able open it, obviously. Its in Kubuntu by default)
- the Network block opens your computers ip settings window
- Added a line for your computers uptime
- Changed font colors to very dark gray and very light gray, instead of black and white, to make it look softer.

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

GlassMonitor is a SuperKaramba monitor that has all the basic information in a small space, like:
Main features:
- Cpu usage
- Up time monitor
- Ram and Swap monitor
- Network traffic monitor
- Partitions monitor