Windows Grep is a tool for searching files for text strings that you specify. Although Windows and many other programs have file searching capabilities built-in, none can match the power and versatility of Windows Grep. The program combines the power and flexibility of traditional command line grep utilities available on DOS, UNIX and other platforms with the ease of use of Microsoft Windows.

In addition to searching, Windows Grep also performs global replacing in your files, with complete safety. Windows Grep is designed for searching plain-ASCII text files, such as program source, HTML, RTF and batch files, but it can also search binary files such as word processor documents, databases, spreadsheets and executables.

What does 'grep' mean?
The Wikipedia entry for grep states:
grep is a command line utility originally written for use with the Unix operating system.
The name comes from a command in the Unix text editor ed that takes the form:
g/re/p
This means "search globally for matches to the regular expression re, and print lines where they are found".

Features

Support for beginning and expert users: In beginner mode, the Search Assistant guides you though the process of setting up and executing a search.
Searches plain text and UNIX-style text files: Program source code, batch files, HTML, RTF and so on can be searched.
Searches all binary files such as Word Processor documents, spreadsheets, unencrypted databases, EXEs, DLLs and so on.
Replacing as well as searching: Once you have performed a search you can change the matches found to another string in all files or a single file, quickly, easily and safely. In beginner mode, the Replace Assistant gently guides you through the process.
Saving and printing of search results: Search results are displayed using HTML which allows printed output to be generated exactly the same as it appears on-screen, and results can be saved to disk in plain text or HTML format.
Command line interface: A powerful UNIX-like command line interface allows Windows Grep to be driven from a DOS box or other Windows shell.
Saving and retrieval of search criteria: Complex search criteria can be saved to disk for later recall to ease their repetition.
Fully multi-tasking: Windows Grep can be minimised while a search is in progress. An icon is displayed on Windows' Taskbar icon tray to indicate when the search is complete. Searches can at any time.
'Search again': Files found to contain matches can be easily searched again to see if they contain another, different, string.
ZIP file searching - look in zip archives for matching files and search them
Delimited and fixed width data file searching at field-level.
Explorer Extension - Launch Windows Grep directly from Windows Explorer
Easy setup and un-installation

Only for V.I.P