No installation required, just unzip to a directory and run gfte. Uninstall, just delete the gfte directory. Portable? Should be.
Windows Vista and WIndows 7 do not provide an easy way to change file associations so I created GFTE. GFTE will work with Windows 2000 and higher.
Gunners File Type Editor allows you to you to create/modify various properties for file extensions. Each user can have different properties for a file extension. For example, the default program to open .txt files when you double click on a file with the .txt extension is Notepad. GFTE allows you to change that.
Admin Mode allows you to change properties for extesnions system wide, you can set Notepad++ to open all txt files for all users, until the user changes that.
Gunners File Type Editor allows you to:
Use the links on the right, to get more info.
All my software is free, but if you like it please consider making a donation.