Recoll is recommended for individuals or professionals who frequently need to search through a large number of documents on their computer. It is especially useful for researchers, students, or office workers who deal with a wide range of file types and need quick access to specific information within those files.
AstroGrep is recommended for software developers, system administrators, and any users who need to perform complex search operations across multiple files on their Windows systems. It is particularly useful for those who prefer a graphical interface over command-line utilities.
DocFetcher - DocFetcher is a portable German/English open source desktop search application.
grepWin - grepWin is a simple search and replace tool which can use PCRE regular expressions to search for...
Everything by Voidtools - Everything. Locate files and folders by name instantly. Everything. Small installation file. Clean and simple user interface.
Agent Ransack - Agent Ransack is a tool for finding files and information on your hard drive fast and efficiently.
dnGREP - dnGrep allows you to search across files with easy-to-read results.
SearchMyFiles - Alternative to the standard Search For Files And Folders module of Windows. Duplicates search is also supported.