Wing File Search is a free instantly full text search application for Windows/Linux/Mac. It allows you to search the contents of files on your local computer.You can think of it as Google Search Engine for your local files. It supports a broad range of data (including MS Office, Open Office , PDF , etc).
Wing File Search can search terabytes of text in a second. It does this by creating so-called indexes for the folders you want to search in. Therefore, you must build idnexes for your all documents before your search.
Features:
Cross Platform - You can run the server on Windows, Linux, Mac OSX.
Portable Version - No need to install.
Unicode support - Unicode support for all major formats, including Microsoft Office, OpenOffice.org, PDF, HTML, RTF and plain text files.
Highlights hits in all supported data types
64-bit support - Both 32-bit and 64-bit operating systems are supported.
Search in source code files - you can use Wing File Search for searching in any kind of source code and other text-based file formats.
Completely Free