Copernic Desktop Search

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Microsofts Bing Desktop lets you search Bing quickly and easily from the desktop or taskbar without opening a browser. Bing Desktop also delivers news. Copernic Desktop Search' title='Copernic Desktop Search' />Windows Search Wikipedia. Windows Search, formerly known as Windows Desktop Search WDS on Windows XP and Windows Server 2. Microsoft for Microsoft Windows. OvervieweditWindows Search collectively refers to the indexed search on Windows Vista and later versions of Windows also referred to as Instant Search1 as well as Windows Desktop Search, a standalone add on for Windows 2. Windows XP and Windows Server 2. All incarnations of Windows Search share a common architecture and indexing technology and use a compatible application programming interface API. Windows Search is the successor of the Indexing Service, a remnant of the Object File System feature of the Cairo project which never materialized. Windows Search uses a different architecture. Windows Search builds a full text index of files on a computer. An add in for 3. Windows XP, Windows Server 2. Windows Vista allows network shares to be added to the index. The time required for the initial creation of this index depends on the amount and type of data to be indexed, and can take up to several hours, but this is a one time event. Once a files contents have been added to this index, Windows Search is able to use the index to search results more rapidly than it would take to search through all the files on the computer. Searches are performed not only on file names, but also on the contents of the file provided a proper handler for the file type is installed as well as the keywords, comments and all other forms of metadata that Windows Search recognizes. For instance, searching the computer for The Beatles returns a list of music files on the computer which have The Beatles in their song titles, artists or album names, as well as any e mails and documents that include the phrase The Beatles in their titles or contents. Collection of free software downloads, free game downloads and desktop stuff for Windows. Here are 10 Free Desktop Search software that let you search for all types of files and folders on your PC. All these desktop search software are completely free. Copernic Inc. is a company based in Ottawa, Ontario, Canada specializing in desktop metasearch engine technology for information on the World Wide Web. List of some useful WinKey Shortcuts and how to create your own Windows key or WinKey Shortcuts in Windows 1087, using freeware WinHotKey. Windows Search features incremental search search also known as search as you type. It begins searching as soon as characters are entered in the search box, and keeps on refining and filtering the search results as more characters are typed in. This results in finding the required files even before the full search text is entered. Katekyo Hitman Reborn Battle Arena Iso. Windows Search supports IFilters, components that enable search programs to scan files for their contents and metadata. Once an appropriate IFilter has been installed for a particular file format, the IFilter is used to extract the text from files which were saved in that format. Windows Search by default includes IFilters for common filetypes, including Word documents, Excel spreadsheets, Power. Point presentations, HTML files, text files, MP3 and WMA music files, WMV, ASF and AVI video files and JPEG, BMP and PNG images. Windows Search uses property handlers to handle metadata from file formats. A property handler needs a property description and a schema for the property for Windows Search to index the metadata. Protocol handlers are used for indexing specific data stores. For example, files are accessed using File System Protocol Handler, Microsoft Office Outlook data stores using the Outlook Protocol Handler and Internet Explorer cache using the IE HistoryCache Protocol Handler. ArchitectureeditWindows Search is implemented as a Windows Service. The search service implements the Windows Search configuration and query APIs and also controls, as all indexing and query components. The most important component of Windows Search is the Indexer, which crawls the file system on initial setup, and then listens for file system notifications to pick up changed files in order to create and maintain the index of data. It achieves this using three processes 9Search. Indexer. exe, which hosts the indexes and the list of URIs that require indexing, as well as exposes the external configuration and query APIs that other applications use to leverage the Windows Search features. Search. Protocol. Host. exe, which hosts the protocol handlers. It runs with the least permission required for the protocol handler. For example, when accessing filesystem, it runs with the credentials of the system account, but on accessing network shares, it runs with the credentials of the user. Search. Filter. Host. IFilters and property handlers to extract metadata and textual content. It is a low integrity process, which means that it does not have any permission to change the system settings, so even if it encounters files with malicious content, and by any chance if they manage to take over the process, they will not be able to change any system settings. The search service consists of several components, including the Gatherer, the Merger,1. Backoff Controller, and the Query Processor, among others. The Gatherer retrieves the list of URIs that need to be crawled and invokes proper protocol handler to access the store that hosts the URI, and then the proper property handler to extract metadata and IFilter to extract the document text. Different indices are created during different runs it is the job of the Merger to periodically merge the indices. While indexing, the indices are generally maintained in memory and then flushed to disk after a merge to reduce disk IO. The metadata is stored in property store, which is a database maintained by the ESE database engine. The text is tokenized and the tokens are stored in a custom database built using Inverted Indices. Apart from the indices and property store, another persistent data structure is maintained the Gather Queue. The Gather Queue maintains a prioritized queue of URIs that needs indexing. The Backoff Controller mentioned above monitors the available system resources, and controls the rate at which the indexer runs. It has three states 1. Windows Search architecture. Running In this state, the indexer runs without any restrictions. The indexer runs in this state only when there is no contention for resources. Throttled In this state, the crawling of URIs and extraction of text and metadata is deliberately throttled, so that the number of operations per minute is kept under tight control. The indexer is in this state when there is contention for resources, for example, when other applications are running. By throttling the operations, it is ensured that the other operations are not starved of resources they might need. Backed off In this state, no indexing is done. Only the Gather Queues are kept active so that items do not go unindexed. This state is activated on extreme resource shortage less than 5 MB of RAM or 2. MB of disk space, or if indexing is configured to be disabled when the computer is on battery power, or if the indexer is manually paused by the user. Advanced Query Syntaxedit Windows Search queries are specified in Advanced Query Syntax AQS which supports not only simple text searches but provides advanced property based query operations as well. AQS defines certain keywords which can be used to refine the search query, such as specifying boolean operations on searched terms AND, OR, NOT as well as to specify further filters based on file metadata or file type. It can also be used to limit results from specific information stores like regular files, offline files cache, or email stores. File type specific operators are available as well. WDS also supports wildcard prefix matching searches. It also includes several SQL like operators like GROUP BY. AQS is locale dependent and uses different keywords in international versions of Windows 7.