SearchMyFiles - Alternative to the standard Search For Files And Folders module of Windows. Duplicates search is also supported.
AstroGrep - AstroGrep is A Microsoft Windows GUI File Searching (grep) utility.
dnGREP - dnGrep allows you to search across files with easy-to-read results.
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
FAR - Find And Replace - FAR is a simple tool for search and replace operations over multiple files.