SearchGun 

SearchGun is a full-text search utility . Search any files on your computer or local network by it content and file name. It will find anything you're looking for, even if you don't know how to spell them, or it is misspelled in the files.
text/file search/approximate search/simultaneous search/file name/file content

PDF Search 

PDF Search performs full-text search in PDF files by keyword, title, subject and author. With PDF Search, you can easily and quickly find the information you want through all PDF files on your hard disk. It searches in DOC, RTF, TXT files as well.
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Zip Search 

Find will often fail when the search for text is inside a zip. This program will do a text search inside zipped files. You can specify the files to search (e.g. *.txt + *.doc) as well as the the search string. Subdirectories can be done too.
zip search

Drag Drop and Replace 

Drag Drop and Replace is a rapid text search and replace utility. Extremely easy to use and user friendly. Features include preview as well as support of files of up to 4 gigabytes in size.
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QuickSearcher 

QuickSearcher is a file search tool. Decided superiority is Preview for text search (as well as preview for graphical files), ability to search within several folders (multi directory search) or within search results, setting favorite search folders.
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Sekhol Finder 

A tool for automating Internet search jobs. Combines web crawler functionality with advanced keywords text search and logical analysis of the document layout. Can be used for deep web searches.
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