Ace File Search 

Ace File Search makes it easy to search for files and folders on your computer; and it's a convenient starting point for searching for information on the Internet. It has as many search options as possible.
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File Search for LAN 

File Search for LAN is a search utility, which is based on the fastest and high performance search engine. Mutithreaded, templates based search. Very suitable for the mp3 file search.
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Turbo Searcher 

The fastest file search utility in the world for finding your any type of files through your local or network computers instantly, supports searching within compressed archives and duplicate files on your system.
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Turbo Searcher Network Edition 

The fastest file search utility in the world for finding your any type of files through your local or network computers instantly, supports searching within compressed archives and duplicate files on your system.
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Burn Rubber: File Search Accelerator 

Do you ever find yourself searching for a file you know is on your hard drive somewhere? Tired using Windows file search and found it horribly slow? Search over 120,000 files in under two seconds with Burn Rubber: File Search Accelerator
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Search 

Handy-dandy text file search utility will quickly and easily find those files containing piece(s) of text. It also allows boolean combination (AND/OR/AND NOT.)
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