Would you recoomend this project?
glark offers grep-like searching of text files, with very powerful, complex regular expressions (e.g., "/foo\w+/ and /bar[^\d]*baz$/ within 4 lines of each other"), as well as highlighting of matches.
You can download file releases of glark - grep-like file searcher project from List of release files
System RequirementsOperating System: OS Independent
List of release files