Common Resource Grep
multi-encoding strings(1) replacement with language identification
Innovative text document search. http://dynaq.opendfki.de for details.
Xapian index viewer
Powerful desktop search app for Windows, Linux and Mac
A forensic system baselining, searching, and evidence collection tool
An open source search engine with RESTFul API and crawlers
Lucene/Solr based search engine and workflow system
UI frontend for sfbf, a useful application to search for largest files
Useful console application to search for largest files on file systems
Calculate primes by using extremely fast sorting
Simple fast and lightweight identical/duplicate files searching tool
extract unique file sets from sets with duplicates
First index images by contents, then search the index for similarities
zfind is a fast file search utility/API for searching within archives