Free blues port scanner software for windows

Flash Port Scanner is a fast and simple multithread port scanning tool. The program has a simple interface and its very easy to use.

DC Port Scanner is, as its name says, a simple and easy-to-use port scanner. DC Port Scanner is, as its name says, a simple and easy-to-use port scanner.
Enter the first three bytes and the trailing dot of an IP address (e.g. "127.0.0."). Click go and a file containing all the open ports will be given.
Must not be used maliciously. Intended as network administrators security analysis tool.
DC Port Scanner is also a small program that does not require any installation.

How wide open is your door?
Scan your computer for open/listening ports used by hackers.

A port scanner is a must have tool for the network administrator. It allows you to scan your network for active ports. This way you can identify applications such as web servers, ftp servers etc. running on your servers and workstations. Any unused applications should be stopped. Furthermore, you can scan your network for ports that might be used by Trojans.The LANguard port Scanner can be used to: - Scan newly installed systems for active services that are not needed or not configured properly. - Scan for newly added ports that might indicate Trojan activity - Check proxy firewall ports - Test router access lists - Perform basic security checks - Look for reverse telnet ports - Verify available network servicesThe LANguard port scanner is freeware.

Not the best port scanner around but it works well and quite fast. It is useful for security audit of your personal computer.
Faltron Port Scanner scans for TCP listening/open ports on your or remote system. You can scan a range of ports or just a single port. You SHOULD NOT scan others system without their permission! I will not held responsible if you use it for illegal purposes.
The speed will be a bit slower when scanning remote system. You can double click on an open port to view more information on the DShield website.