grep - grep is a command-line utility for searching plain-text data sets for lines matching a regular...

Winaero Tweaker - Universal tweaker software which supports Windows 7, Windows 8, and Windows 8.1.

PowerGREP - Quickly search through large numbers of files on your PC or network using powerful text patterns to find exactly the information you want. Search and replace with plain text or regular expressions to maintain web sites, source code, reports, ...

Ultimate Windows Tweaker - Ultimate Windows Tweaker is a freeware Tweak UI Utility for tweaking and optimizing Windows.

dnGREP - dnGrep allows you to search across files with easy-to-read results.

GIGATweaker - GIGATweaker is a powerfull and compact application that allows you to optimize and tweak your OS.