WinpkFilter 3.2.7.6 could be downloaded from the developer's website when we last checked. We cannot confirm if there is a free download of this software available. You can launch this PC program on Windows XP/XP Professional/Vista/7/8/10/11 32-bit.
The software lies within Development Tools, more precisely IDE. The actual developer of the program is NT Kernel Resources.
According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software. The following versions: 3.2 and 3.0 are the most frequently downloaded ones by the program users.
From the developer:
Windows Packet Filter Kit (WinpkFilter) is a high performance packet filtering framework for Windows 9x/ME/NT/2000/XP/2003/Vista/2008/7/2008R2/8/2012/8.1/2012R2 that allows developers to transparently filter (i.e. view and modify) raw network packets on NDIS level with minimal impact on network activity & without having to write low level TDI or NDIS driver code.
You may want to check out more software, such as PSPad editor, Adobe ExtendScript Toolkit or FileMaker Pro, which might be related to WinpkFilter.