SearchMyFiles - Alternative to the standard Search For Files And Folders module of Windows. Duplicates search is also supported.
dtsearch - dtSearch - The Smart Choice for Text Retrieval since 1991.
SMF – Search my Files - SMF - Search my Files v13 is the fastest duplicate files finder and a multi-dimensional - file searcher, - file copier / mover, - file deleter / eraser, - and
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, ...
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
Advanced Recent Access - Advanced Recent Access is designed to see more properties of your recent used resources (files and directories). Key features: can see more properties of the recent resources, such as path, size, type, date modified and date created. And more.