Advanced Port Scanner
Advanced Port Scanner is a small, very fast, easy-to-use and robust port scanner for the Win32 platform. It is multithreaded, so on fast machines you can scan ports in very a few seconds. It has descriptions for the common ports and can perform scan on predefined port ranges.
http://www.radmin.com/download/pscan12.exe - 533Kb - Download - Screenshot

Fast Port Scanner
Fast Port Scanner is a fast multithreaded port scanner that scans about 400 ports a second. It supports both the TCP/IP and UDP protocols. You can select address ranges to scan multiple interfaces or hosts. Any open ports will have the any suspect Trojans listed with it. ... This program is free when using Global Up Time website monitoring service.
http://www.globalwebmonitor.com/software/FastScannerSetup.exe - 636Kb - Download - Screenshot

FreePortScanner
Free Port Scanner is a small, fast, easy-to-use and robust port scanner for the Win32 platform. You can scan ports on fast machines in a few seconds and can perform scan on predefined port ranges. This tool uses TCP packets to determine available hosts and open ports, service associated with... The tool is designed with a user-friendly interface and is easy to use.
http://www.nsauditor.com/freeware/downloads/FreePortScanner.exe - 518Kb - Download - Screenshot

SkPortScan ActiveX Control
SkPortScan ActiveX Control is a lightweight and powerful port scanner control. It allows developers to integrate port-scanning capabilities into their applications. SkPortScan can be used for network exploration or security auditing. SkPortScan can determine what services (ports) are open... It can operate in 3 different scan modes: - Scan range of ports; - Scan authorized ports only (authorized port numbers are divided into three ranges: the Well Known Ports, the Registered Ports, and the Dynamic and/or Private Ports.
http://www.magnetosoft.com/downloads/skportscan_setup.exe - 2Mb - Download - Screenshot

1st Ip Port Scanner
1st Ip Port Scanner ip finder,port finder,ip scanner,port scanner,ip tracer,ip tracker,ip camera all in one software. Find ip address,search ip address,trace ip address,scan ip address,find port,search port,scan port. Full Product Description 1st Ip Port Scanner is a very useful Ip Scanner and... And it also can find port,search port and scan port. ... 1st Ip Port Scanner allows for testing the UDP port's status based on ICMP Destination Port Unreachable message. ... port scan,port search 5. ... 1st Ip Port Scanner reverse lookup IP address into hostname and read responses from connected...
http://www.1st-soft.com/download/scanner.exe - 1Mb - Download - Screenshot

NetworkActiv Port Scanner
NetworkActiv Port Scanner is a network exploration and administration tool that allows you to scan and explore internal LANs and external WANs. Because of the versatility and choosable operating modes available in NetworkActiv Port Scanner, it may be used by experienced network administrators as... NetworkActiv Port Scanner provides scanning performance simply not found in other Windows based network scanners, but one will need to actually try it to understand just how fast a network scan can be.
http://www.networkactiv.com/NetworkActivPortScannerV4.0.exe - 2Mb - Download - Screenshot

pcSuper Scanner
Ordinary online scanners will only scan for fraction of the ports. Our proprietary pcSuper Scanner is the only scanner in the world that will scan ALL 65,535 ports, TCP server and client as well as UDP. What's more - it will doing this at an unbelievable rate in mere seconds! ... The opened port is only a problem if it was opened by a malicious program. ... In that case you will need pcInternet Patrol to sort it out. ... Ports may be opened by a legitimate program and that is OK. ... No other scanner gets even close.
http://www.pcinternetpatrol.com/downloads/pcscanner.exe - 22Kb - Download - Screenshot

Hard Drive Test Pilot
Hard Drive Test Pilot v2. 5 for Windows 95/98/ME/NT/2000 and XP is the latest utility from Mirskiy Solutions that reads and scans for bad disks and files. Using the latest scanning technology, HDTP will scan your disk(s) and files for certain internal errors which may cause specifc damage to the... - Scan Port Settings for errors. ... - Scan MBR (Master Boot Record) for errors. ... - Scan Files for viruses. ... - Scan Disks for errors. ... - Scan BIOS/CMOS settings for errors. ... - Scan Files for errors.
http://www.datamir.com/software/hdtp25.exe - 1Mb - Download - Screenshot

TrojanHunter
TrojanHunter is a dedicated anti trojan with file memory and registry scanning. With an easy-to-use Scanner and a Guard that scans in the background TrojanHunter is a must-have complement to your virus scanner. Features - High-speed file scan engine capable of detecting modified trojans. ... - Port scanning for detecting open trojan ports. ... - Process list giving details about every running process on the system, including the path to the actual executable file. ... - LiveUpdate utility for effortless ruleset updating via the Internet.
http://www.misec.net/products/TrojanHunterSetup.exe - 6Mb - Download - Screenshot

easy Look at Net
easy Look at Net is a simple ports scanner, packet sniffer and web-page source loader. Multithread port scanner and packet sniffer specifically made to scan opened TCP ports, packets are filtered by incoming and outgoing, by IP addresses, ports and protocols - TCP, UDP, ICMP, IGMP. ... Besides there is no need in third-party libraries, such as WinPCap, etc. ... Utility does not demand installation and is very simple in management that is important for beginning managers of networks. ... Simple web-page source downloader worked via proxy server, if is present in system.
http://lookanet.com/download/lookanet.exe - 164Kb - Download - Screenshot