ZoneStripper Shell Extension
This is a companion to my ZoneStripper program to remove the Zone.Identifier NTFS alternate data stream, also known as 'The mark of the web', that indicates to Windows and MS Office that a file came from the internet.
It adds options to remove it or change it to trusted, and if you select a folder it will be applied recursively to all files within that folder and subfolders.
It has a helper module that automatically merges the .reg file after building.
On 64bit Windows you should build both the 32 and 64bit version so it also appears in 32bit apps.