PacketTrap (http://www.PacketTrap.com) DNS Audit is a utility that matches one or more IP addresses to their corresponding DNS names. The tool does forward lookups on the DNS name so you can ensure that the forward and reverse lookups match. The tool also displays NetBIOS, local host and lmhost file values for each IP.

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 port and other important characteristics. The tool is designed with a user-friendly interface and is easy to use.

Eltima Serial Port Terminal is an ideal tool for testing, debugging and troubleshooting serial port devices. It lets you work with numerous number of ports simultaneously, both serial and virtual ones. You can easily alter baudrate, databits, parity, stop bits, flow control parameters and dynamically apply these changes to serial port settings on the go. You can always check for history of typed commands.

Print Distributor allows you to intercept Windows print jobs and forward them to multiple printers or files. Installed as a printer Port Monitor in Windows NT / 2000 / XP / 2003 Print Distrubutor allows you to create virtual print queues to distribute your output. Print Distributor also allows you to load balance prints across multiple printers.

COM Port Toolkit is an integrated serial communications testing toolkit. It sends user's data to and receives one from a device and records all transfers to a log.

You can test equipments serial communications protocol by hand: feed it input, check the output.

COM Port Toolkit can capture serial communications between the device and the software by using special serial port driver.

1st Ip Port Scanner is a very useful Ip Scanner and Port Scanner. It builds ip finder port finder ip scanner port scanner and ip tracer ip tracker ip camera in one software. It can find ip address,search ip address,trace ip address and scan ip address.And it also can find port,search port and scan port.It is easy and fast!
1st Ip Port Scanner allows for testing whether a remote computer is alive with three types ICMP, SYN and UDP.

Virtual Serial Port ActiveX allows your application to create additional virtual serial port in system and fully control it. Created virtual port looks absolutely like a real one for Windows applications. You can view parameters information of a virtual port, set by other application, view and control from your application data sent to virtual port by other applications and respond to them by sending your own serial data to virtual COM port.

Virtual Serial Port ActiveX Control is a powerful tool for professional developers that allows your application to create custom additional virtual serial port in system and fully control it. Created virtual serial port looks like real serial port for other Windows applications. From your application you can control data sent to virtual serial port by other applications and respond to them by sending own data to virtual serial port.

Look RS232 is a tool for debugging computer connection with peripheral devices using COM port, such as modem, mini-ATS, projector etc. Its easy to use interface guarantees an easy work with Com-port. Look RS232 can send data through COM port, receive data from an outer device through COM port, it has port indication as well. Look RS232 supports connection at the standard speed of 110-15200 kbit/s, it supports commands of COM port program control.

Configurable UDP and TCP port forwarding.
Define IP address ranges to allow or block for each port being forwarded.
Have program forward multiple ports simultaneously.
View the current data throughput speed of each port forwarding operation.
Have program log connection events to a text file.
Run program without installing (if desired).
Bounce connections back to connector (on same or different port).
100% freeware.

This reverse port forwarding (tunnelling) tool allows you to access ports on computers behind firewalls, gateways, and inconfigurable routers... a two-component system that only requires a single TCP session initiated from the inaccessible computer. Once that session is established, you can forward as many ports as you like and then connect to those ports by connecting to ports on your local computer. Was designed with ease-of-use in mind.