If you type a word in Google’s search box and press enter, you will get the search result in one second, the speed of the query is amazing quick! This is partly because that Google has built the index of all web pages in advance.
Actually, the file system of Windows XP/Seven has a similar mechanic, the Master File Table (MFT) is an index to all the files on NTFS format partition, when you create / copy / delete / cut / copy a file, the point to the file will be created or modified in MFT, with the file search software utility which deal with MFT, you can find any file on your hard drive immediately too!
UltraSearch allows you search files on all the local NTFS partitions, including the virtual partitions created by Truecrypt / Comodo Disk Encryption or other harddisk encryption software. UltraSearch achieves its speed by working directly on the Master File Table (MFT) of the NTFS partitions.
You can enter a file name or a pattern like *.exe and will see the results already while typing, you can open the file in the list via Explorer context menu inside. UltraSearch lets you exclude folders, files or file types by providing an exclude filter. The search results can also be printed or exported as text, RTF, HTML, CSV and Excel file.
UltraSearch supports Windows XP/ Windows 7 /2003/Vista/Server 2008, and works on both 32bit and 64bit systems.
Download from CNET
You can also download Portable UltraSearch here.
Everything has more advanced features than UltraSearch, it will build a index from MFT when it first launched, the progress is accomplished instantly. It gives you the ability to exclude files and folders, and supports wildcards, boolean operators, and regular expressions, and allows you search files in networked computer.
Everything supports Windows 7 / Windows XP / 2003 / Vista / 2008.
Everything supports multilanguage and has portable version too.
Download from the developer’s website.
Google Desktop Search( GDS ) uses its own technology to build a index of all of the files on the harddrive, this will take you several hours and will occupy some disk space, but GDS will not only give you the filename when you search, it will also show you the content inside files, this feature is lack in UltraSearch and Everything.
When you do a Desktop search, you’ll go to a page showing you the most relevant search results, each of which include the file name and a brief snippet with your search terms highlighted. You can filter for a particular type of item — only files, for instance — by using the links at the top of the page. You can now also preview your Desktop search results right inside the browser (no more waiting for an entire application to open just to verify that you’ve found the file you were looking for).
Google Desktop Search supports Windows 7 / Windows XP / Vista and Linux / Mac.