PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...
mat2 - mat2 is a metadata removal tool, supporting a wide range of commonly used file formats.
regexxer - regexxer is a nifty GUI search/replace tool featuring Perl-style regular expressions.
Scrambled Exif - Scrambled Exif (pronounced eggsif) helps you remove the metadata in your pictures before you share...
dnGREP - dnGrep allows you to search across files with easy-to-read results.
ImagePipe - removes exif data and modifies images to reduce size before sharing.