Free dynamic port forwarding software for windows

Image Resize Wizard is a free program that takes two inputs - an image URL and the size - and creates code to generate a new, re-sized image on-the-fly.
You can add Dynamic Image Resize Wizard to your website or use it yourself and its very easy to install.

Natural-Studios Port Guard 1 is equipped with many useful features which lets users watch and protect their ports. Simply, users enter the port numbers, which they want to protect and press start. When there is a connection attempt on one of the ports, NS port Guard shows an alert and gives information about the attack and protects the port by rejecting the connection attempt.

Requirements: Windows Me/NT/2000/XP

UPnP Port Works ("UPnPPW") is a free and all purpose platform independent application which aids router management. Its framework, pioneered under C is fully compliant with Microsofts UPnP technology. Furthermore, this independent solution consumes very little system resources, and requires no administrative rights.
The easy to use console application provides the user with detailed information pertaining to the issued commands, and at the same time delivers an unparalleled troubleshooting interface. UPnPPW also offers a flexible set of commands that range from: modifying or viewing port forwarding entries to retrieving pertinent router information.
Main features:
- Standards-compliant UPnP implementation
- Platform independent NAT traversal engine
- Offers support for a wide range of router manufacturers
- Uses minimal system resources
- Add, remove, and view port forwarding entries with ease
- Easy to use console interface
- Offers a flexible set of commands
- No installation routine
- No administrative rights are required
- UPnP Port Works has been utilized by many different users in conjuction with the following programs: mIRC, BitTornado, AIM, TinyWeb, SlimFTPd, and
- Serv-U

GFD Dynamic Flash Gallery is a free and configurable dynamic photo gallery. You just have to put your photographs on your site, arrange them in directories, and everybody will be able to view them directly.

Dynamic IP Refresher 1 gives you the power to quickly refresh your Dynamic DNS on a network. It saves you the hassle of typing in each individual command. This program is entirely free.