Remote task manager
Remote task manager needs no installation, just unzip it to some folder and start it. With this program you can kill remote process, shutdown remote computer, change remote computers domain, view system information of remote computer, send message (works if you have messenger service... It requires no installation on remote machine!
http://www.filelodge.com/files/hdd5/102748/demo_v1_3.zip - 932Kb - Download - Screenshot

NetWatcher
Do you want to supervise users' every action on remote computers simultaneously? NetWatcher, a Real Nuke for you to supervise and control computers over Internet/network in a Windows. For more info, please visit http://www. netguarder. com/en/netwatcher. ... You will see remote computer screens, URL access, and program run history of remote users in a Windows of your computer. ... Benefit:* Simultaneously supervise Windows screens at numerous remote computers in a central Windows;* Get remote URL access and program run history instantly;* Control and operate numerous remote computers in a...
http://www.NetGuarder.com/download/NetWatcherEN.zip - 9Mb - Download - Screenshot

NetListener
With Netlistener you can run Applications on disconnection or on connection from Computers on your network. The Service starts Actions after a Status-Change, like Batch-files with "net send" or commands to send Fax/SMS (external Application) to the Maintenance Personal.
http://www.somebytes.de/downloads/netlistener.exe - 2Mb - Download - Screenshot

SilentNight IE Watch
With SilentNight IE Watch you get the following. A server part you will have to install to one computer within your lan, and a client that must be copied to all computers you want to surveillance. The client dont need any installation, just copy it to the computer you want, and then start it once. ... The client will from now of send the server a message every time Internet Explorer is used on that computer. ... From now of it will take care of it self. ... The message delivered is: Computername, IP, User, Time of the site visit and finally the site visited(url).
http://www.silentnight2004.com/SNIEW_Setup.exe - 55Kb - Download - Screenshot

Winpopup NET messenger
You do not need to have Internet connectivity to use this feature. WinPopup NET Messenger is a network messaging program ( LAN CHAT ) for Windows, that will allow you to send LAN messages from one computer to another on the same network. You may send the message to the user name or computer name... This program has no relationship whatsoever to the Internet.
http://www.lantalk.net/downloads/winpopup-net.exe - 2Mb - Download - Screenshot

QueIt
QueIt is a powerful scheduling utility that allows you to schedule programs, tasks or even MS-DOS batch files to automatically launch at specified times you choose. With QueIt you are able to schedule a program to launch daily, weekly, monthly or hourly. ... You can also send command line arguments from QueIt to the program that you are launching. ... a computer other than the one QueIt was installed on). ... You can even send an email after a task has started or is complete. ... With the QueServer add-on, QueIt is able to run your scheduled tasks on remote computers (i.
http://www.vandaveer.com/queit/queit_setup.exe - 3Mb - Download - Screenshot

MagicMessage
MagicMessage for Windows lets you send and receive text messages from your PC. Key Benefits: Turns your computer into a mobile phone able to send and receive text messages. Type long text messages effortlessly from the comfort of your keyboard. Fast, reliable service with guaranteed delivery of... Recipient sees your message from a UK number: +447791618542. ... Send to mobile networks in UK and over 20 countries worldwide. ... How it works Compose your text message and click Send. ... Built-in phone book to store all your mobile phone numbers.
http://www.textmagic.co.uk/magicmessage/magicmessage.exe - 2Mb - Download - Screenshot

NetSendFaker
NetSendFaker allows you to send anonymous net send messages to anyone that is connected to the network. You can also emulate messages as if they were sent from other computer. The tool is designed with a user-friendly interface and is easy to use.
http://www.nsasys.com/downloads/NetSendFaker.exe - 360Kb - Download - Screenshot

WinMessenger
WinMessenger is an easy to use program that allows you to send and receive messages from computer to computer in real-time without using dedicated servers. It works over any network protocol (TCP/IP, IPX/SPX, NetBEUI, etc. ), it is easy to deploy and it does not require computer knowledge or... For example, you can send a message to a Novell user, receive messages from Linux systems, send and receive messages to/from Windows NT servers and so on. ... WinMessenger works exceptionally well under all existing implementations of Windows without any updates or upgrades required - from the...
http://www.winmessenger.com/files/WinMessenger20.exe - 726Kb - Download - Screenshot

WebcamMail
WebcamMail makes sending video/voice mail faster and easier. By utilizing Microsoft Windows Media (TM) technology, WebcamMail changed people¡¦s impression on yesterday's video email. Most of the video email software today generates very big video files, which is virtually undeliverable over the... If you decide to send the message later, you also have the option to save it, and send it later. ... Therefore, you and receivers can refrain from computer virus. ... With just 3 clicks, you can record a video/voice, and send it your friend/friends.
http://www.webcamsoft.com/dnload/wcammail.exe - 3Mb - Download - Screenshot