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

Remote Viewer (pc remote access)
Remote Viewer (pc remote access) is a pc remote control product, which enables you to control your computer remotely via any web-browser. The download includes an SDK for developers The Remote Viewer ActiveX (COM) control encapsulates code that is common to all remote control applications, the... Remote Viewer enables you to quickly implement custom remote control applications, such as: Remote tutoring applications Off-site technical support PC abuse monitoring systems.
http://www.webtropy.com/downloads/pcremoteaccess.exe - 3Mb - Download

Atelier Web Remote Commander
Lets you manage servers and workstations from your local computer. AWRC does not require that you install any software on the remote machine. This turns the software particularly useful for accessing remote machines without any previous preparation. ... With such tools you will be able to perform operations on the remote system that privileged remote interactive users himself could only dream about. ... With AWRC you have the knowledge and capabilities to do virtually anything on the remote computer.
http://evalsoftware.atelierweb.com/awrc558.zip - 2Mb - Download - Screenshot

NetSupport Manager Remote Control
Perform remote support and management on multiple systems simultaneously over a LAN, WAN and the Internet with this powerful PC remote control software. NetSupport Manager provides speedy, secure remote PC access, dynamic inventory, automated scripting and scheduling, file transfer, remote... Use NetSupport Manager to manage help desk support, mobile computing, desktop management, software training and system automation. ... Download a free, fully functional 30 day trial today. ... Installed in millions of desktops worldwide.
ftp://download.netsupportsoftware.com/public/3rdparty/nsm.exe - 6Mb - Download - Screenshot

EMCO Remote Desktop Professional
EMCO Remote Desktop Professional is a remote desktop management solution for professionals, education and business in a wired and wireless Microsoft network Reduces administration costs and enhances productivity all from a central location Software and Hardware information gathered from remote... Multiple Service Installation The professional version has built-in special dialog where you can manage and deploy the Remote Desktop Pro service across your remote client? ... s Remote Desktop Professional can scan your remote client?
http://www.emco.is/download/remotedesktoppro/remotedesktoppro.zip - 4Mb - Download - Screenshot

NetSupport Manager - PC Remote Control
Perform remote support and management on multiple systems simultaneously over a LAN, WAN and the Internet with this powerful PC remote control software. NetSupport Manager provides speedy, secure remote PC access, dynamic inventory, automated scripting and scheduling, file transfer, remote... New features include Linux and Pocket Pc support, Monitor Mode / thumbnail view, A new whiteboard feature, record and replay and a new remote command prompt feature. ... Use NetSupport Manager to manage help desk support, mobile computing, desktop management, software training and system automation.
http://download2.netsupportsoftware.com/public/3rdparty/nsm.exe - 11Mb - Download - Screenshot

JM Pager
JM Pager is a special corporate "pager" for work in TCP/IP networks on Windows ® platforms (95/98/Me/NT4. 0/2000/XP/2003). Primary aims - remote administration of client computers in a network & messaging tool for users. Features Common: Message sending. ... Get remote system information. ... Shutdown remote computer / Restart remote computer. ... Get computer's database (information about all remote computer's hardware, software). ... List current processes on remote computers. ... Kill process in remote systems.
http://www.jmpager.com/files/pager_e.exe - 2Mb - Download - Screenshot

Alchemy Remote Executor
System management tool that allows Network Administrators to execute programs on remote network computers without leaving their workplace. This can be useful in the case of the operating system patch installation, execution of the diagnostic tools, etc. ... The person using this software to execute programs on remote computers should have administrative login and password for the computer(s) he/she is remotely launching the programs on.
http://www.alchemy-lab.com/products/rex/rex.zip?c=archive - 295Kb - Download - Screenshot

WiSSH Standard Edition
Windows Remote Desktop Protocol/Secure Shell (RDP/SSH) Client. WiSSH Remote Access Technology provides easy, secure, controlled remote access to systems inside your network perimeter. Coupling Microsoft's Remote Desktop Protocol with the trusted open source SSH protocol in a lightweight client... WiSSH allows access through the Gateway SSH server to Windows 2000 Terminal Servers, Windows 2003 Terminal Servers, Windows NT Terminal Server Edition, Windows XP with Remote Desktop enabled, and Windows 2000/2003 Servers with Remote Administration enabled.
http://www.wissh.com/Trial/se_setup.zip - 3Mb - Download - Screenshot

Farsighter
Farsighter monitors a remote computer invisibly by streaming video to a viewer on your computer. You will know exactly what is happening on the remote computer as you see it in real-time. Some applications are: - Monitor your computer from a remote location. ... What makes Farsighter different from other remote spy/control systems are: - The server can execute invisibly. ... A server that invisibly captures screen video and sends it to a remote viewer. ... - Farsighter has a very low impact on system performance.
http://www.bysoft.se/sureshot/farsighter/farsighter.zip - 3Mb - Download - Screenshot