Network Mechanic
Network Mechanic optimizes your Internet connection up to 300%, providing faster download speeds and fewer delays while browsing. Network Mechanic modifies a wide series of parameters that control how your TCP/IP stack operates. Such parameters as packet size, receive and transmit window sizes,... It acts as an accelerator for your network connection. ... Now with the help of our program you can optimize TCP/IP protocol according to your opportunities of network without a studying all bases TCP/IP networks.
http://www.benutec.com/download/networkmechanic_trial.exe - 663Kb - Download - Screenshot

VE Network Catcher (Lite)
Network Catcher, from Shunra Software, is a free network monitoring tool that records and displays latency and packet loss between your PC and any internet site. Use this freeware tool to monitor the quality of your network link. You can save all your recordings and send it to another user via... s network simulation technology, enabling you to capture and import production conditions directly into network simulation scenarios and test applications under real-life network conditions. ... However, if the target network has not yet been designed or built out, you can record a variety of...
http://www.shunra.com/downloads/VENetworkCatcherLite.zip - 533Kb - Download - Screenshot

Network Commander
This application was written due to a lot of frustration from my side, I have been working a lot with network configurations, routers setup (networking maintenance, in general). I didn? t have any good tool that will help me with the little things. I hate going to command prompt and run programs... Couple of more convenient features where implemented to make your life much more easier: port scanner, that can scan a range of IP address for open/closed ports, network utilization that can enumerate the current network usage, TCP/UDP/ICMP/IP statistics for the current machine and more..
http://geocities.com/ncfreeware/NC201Setup.zip - 9Mb - Download - Screenshot

LanTool
LanTool could be the answer to your network administration needs. Designed to make remote administration a breeze, it is ideally suited for implementations which require remote network administration such as corporate networks, home networks, cyber cafes, exhibition centres, hotels and many... Acquire Network inventory of software and hardware, tasks running, software installed, hardware connected, detailed network information such as IP and MAC addresses, active connections, network adapter stats (packets Tx/Rx).
http://www.n37dev.com/Downloads/LanTool/LanTool.0.2.1.exe - 591Kb - Download - Screenshot

xSharez scanner
xSharez scanner is a multithreaded NetBIOS/SMB scanner designed for both network administrators and users interested in the network security issues. This software will help you to solve one of the most serious problems of all modern computer networks - unauthorized data access using NetBIOS/SMB... - Generate advanced HTML and CSV reports and analyze the network security level using this information. ... - Mount shared resources that are found by the program as network drives or simply browse them using Windows Explorer.
http://www.tools-for.net/download/xsharez3demo.exe - 1Mb - Download - Screenshot

Dial-up Password Recovery Master
Dial-up Password Recovery Master is a dependable password recovery solution for network and dial-up connections. Most networks use authentication and authorization to allow or deny access to the Internet, network or other computers. This means there are tens, hundreds or even thousands of logins... Dial-Up Password Recovery Master is also the only program that works for both non-network Windows (9x and ME) and network Windows (NT, 2000, XP). ... How can one recover his or her Dial-Up password or a network logon password?
http://www.rixler.com/cgi-bin/download.pl?file=dpasrec.zip - 624Kb - Download - Screenshot

DPAN
Free Utility - New Disk Performance Analyser for XP Networks Reports severe fragmentation related performance loss on your networked systems! The Performance Analyser provides never before available single-point analysis of systems requiring defragmentation attention to achieveoptimal performance. ... Some of these enhancements affect the operation of certain network functionality in Executive Software's products. ... The agent then completely removes itself from remote client systems. ... After collecting all the analysis data, Disk Performance Analyser for Networks will create and...
http://demodl.element5.com/50154/DPenFRSN2Xi1_0_104.exe - 5Mb - Download

Alchemy Network Inventory
Network Administrators use this tool to inventory computers in the corporate networks for the software and hardware configuration, generate software licenses reports, etc. The program does not require the client module to be installed on each individual workstation, but can be configured to... With Alchemy Network Inventory you can not only build comprehensive detailed reports on the network PC's configuration, but also export inventory information to SQL databases, intranet web sites, text files, etc.
http://www.mishelpers.com/ftp/anin.zip?c=archive - 3Mb - Download - Screenshot

MSNTalk
MSNTalk - easy to use replacement for standard WinPopup. Allows to chat in a local network both in the conference mode, and private talks. Does not depend on the installed network protocols (can work in TCP, IPX, etc networks).
http://www.softcomplete.com/download/msntalksetup.exe - 564Kb - Download - Screenshot

NetSearcher
NetSearcher searches various resources for specific files. It can search through networks, domains, computers or shared resources. NetSearcher allows you to view and search through all the shared resources that are hidden. It helps you save your time and money when you need to quickly find the... You might also be very surprised by the content of hidden shared resources on your network: a definite plus in your search! ...   NetSearcher can save identified network structure so that you could easily retrieve it if needed.
http://www.skyward-soft.com/NetSearcher.zip - 1Mb - Download - Screenshot