Examine32 is a fast and versatile text search utility for Microsoft Windows
98/Me/NT/2000/XP/2003 that can

* search any type of file. Text files and Microsoft Word, rich text format
(RTF), WordPerfect, PDF (Acrobat files) and HTML (web pages) files are
specifically supported.
* use either ordinary text or GREP-like regular expressions. The logical
operators OR, AND, NOT and XOR can be used with a specified search
proximity.
* search files within ZIP archives.
* return a list of findings with file details, the selection highlighted in
context, and line number.
* save your search data to disk and retrieve it at a later date.