dtsearch - dtSearch - The Smart Choice for Text Retrieval since 1991.
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
ANGRYsearch - Instant file search, showing results as you type.
SearchMyFiles - Alternative to the standard Search For Files And Folders module of Windows. Duplicates search is also supported.
SwiftSearch - SwiftSearch is a lightweight program whose purpose is to help you quickly find the files you need...