FAR - Find And Replace Alternatives

grepWin is a simple search and replace tool which can use PCRE regular expressions to search for strings of text within files. grepWin adds an entry to the shell context menu to easily search selected folders.

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

dnGrep allows you to search across files with easy-to-read results. Search through text files, Word documents, PDFs, and archives using text, regular expression, XPath, and phonetic queries.

A fast real-time search engine for displaying regular expression matches (both file name and content) across multiple directories.

AstroGrep is A Microsoft Windows GUI File Searching (grep) utility. Features include regular expressions, versatile printing options, stores most recent used paths and has a "context" feature which is very nice for looking at source code.

regexxer is a nifty GUI search/replace tool featuring Perl-style regular expressions. If you need project-wide substitution and you’re tired of hacking sed command lines together, then you should definitely give it a try.

PowerGREP is a powerful Windows grep tool. Quickly search through large numbers of files on your PC or network, including text and binary files, compressed archives, MS Word documents, Excel spreadsheets, PDF files, OpenOffice files, etc.

Open Source tool to find/replace text in multiple files.

Find Any File searches your local disks for files by name, creation or modification date, size, or type and creator code (not by content, though). As there are other tools with a similar search operation, here are the special features unique to Find Any File:

Search & Replace Master is a freeware. It looks through multiple files for a string or pattern and can also replace it with another string or pattern.