GREP
Catalog your devices to search, analyze, and backup your files.
Command-line toolset for extracting text from files
Search recursively all files, text inside files, and bookmarks
A fast file search utility for Unix-like systems based on GTK3
multi-encoding strings(1) replacement with language identification
Xapian index viewer
Powerful desktop search app for Windows, Linux and Mac
File type detector library
An open source search engine with RESTFul API and crawlers
UI frontend for sfbf, a useful application to search for largest files
Useful console application to search for largest files on file systems
simple BNF parser makes xml markup of matches
data organising system for arbitrary files
a Finding, Sorting and Converting free software (file manipulation)
Tool to find symbols in Library or Executable
A Fast Duplicate File Detector with graph based semi-automatic cleaner