This page serves as a repository for NES-related stuff I have written over the years. If you'd like to contact me, email quietust at either @qmtpro.com or @gmail.com. I can also be found in the #nesdev IRC channel on EFnet.
The iNES Header Editor below, originally uploaded a few weeks ago, has been updated to match changes that had been made to Nintendulator.
A few days ago, I wrote a Windows XP Explorer extension DLL which allows you to view several .NES file properties as extra columns: mapper number, PRG ROM size, and CHR ROM size. NES 2.0 ROMs are supported, and will display both the main mapper number and the submapper using the format "MMMM.SS".
Installation is fairly straightforward - just copy the DLL to a convenient directory and run "regsvr32 nescolumns.dll" to activate it, then browse to each folder containing .NES ROMs and right-click the column header to add new columns. It should be noted that this does not work on Windows Vista or later.