dtSearch Desktop

dtSearch Desktop is a powerful and robust information retrieval tool, it enables you to search through terabytes of text in under a second because it builds an index that stores the location of the words in your files.

Unlike most other search tools, searching is not ‘blind’ – the word-wheel shows all the words in your documents, simply double-click on a word to enter it into the search query textbox.

NOTE: Image above is dtSearch Desktop 2022.02, note Stemming Language selector includes 30 languages at no extra charge. See dtSearch Desktop beta Release Notes.

dtSearch Desktop can search all Microsoft Office formats and the latest PDF 2.0 format, as well as many legacy file formats, and never alters or moves your original files. See here for the full list Article: DTS0103

Index drives (including removable media), folders, files, Outlook folders or use the built-in Spider to index Web sites

Advanced indexing options to give you complete control over the content of each index (emails; credit-cards; date-range, XML fields)

It will automatically collect metadata from HTML, Word and PDF documents as well as from media files such as MP3, ASF and WMV to allow field searching.

Indexes can be automatically updated by using the Windows Task Scheduler to reflect additions, deletions and modifications to your document collection.

Each index holds over 1TB of data, create multiple indexes for focused search results.

Index attachments to multiple levels


dtSearch has over 25 indexed and un-indexed text search options, uniquely dtSearch Desktop can perform un-indexed as well as “combination” searches to search files that have not been indexed.
Boolean; Natural language; Phrase; Directed Proximity (Pre/n) ; Proximity (w/n); Phonic; Fuzzy ; Wildcards in any position (* ? =); stemming; user defined thesaurus; WordNet thesaurus; Regular expressions.

e-Forensics investigative features such as search using a wordlist (including with Boolean operators),

NOTE: dtSearch Desktop and dtSearch Network are identical software, only the licensing differs, both products can search over a network. dtSearch Network has a 5-user minimum license and all users share the same serial number. See the End User License Agreement (EULA) for details.

Add-on products for dtSearch Desktop

These products extend dtSearch Desktop/Network capabilities even further:

365 Indexer

365 Indexer provides indexing of Microsoft 365 – SharePoint Online and OneNote online. An essential add-on for secure hybrid working. Avoid the need for remote workers to make local copies of files on their desktop to make them searchable by dtSearch Desktop; with this add-on they can index and search files stored exclusively online.

Database Indexer

Database Indexer provides indexing of SQL/mySQL databases, local or in the cloud (Azure/AWS).

User Thesaurus Plus

User Thesaurus Plus lets you choose from multiple User Defined Synonym files for specific purposes. See T207 training article about search using genealogy, cross-lingual, & political samples that are included. NOTE: From 6th Mar 2024 User Thesaurus Plus is discontinued for use with dtSearch end-user products. eSearch includes the same functionality.

Stemming Language Selector

IMPORTANT:  From 1st April 2022 SLS500 Stemming Language Selector is discontinued. Following a license agreement between dtSearch UK & dtSearch Corp, dtSearch Desktop 2022.02 and later include all stemming language files as standard at no extra charge.

Alternative products

Universal Desktop Search (eSearch)

Introductory offer: eSearch will be supplied free of charge to holders of a dtSearch Desktop/Network license within the included one year support, or current on extended support from dtSearch UK. Contact us to take part in beta testing or to be kept updated on this new product line: eSearch Universal Desktop Search

dtSearch Web/Publish

dtSearch Web provides a browser based simple search experience over any network using Microsoft IIS on the server. Ideal for museums, websites, local government, courts, etc. for public or staff search of reports, brochures, data sheets, etc.
dtSearch Publish can compliment dtSearch Web for distributing the same content via DVD or USB drives, useful for e-Bibles etc. or where network access maybe limited or insecure e.g. maritime, airborne, remote locations, military.

Universal Search System (Custom – to order)

Universal Search System provides modern desktop clients (Windows or macOS or Linux) with multi-lingual user interface with advanced search options (e.g. word-wheel, multi-lingual stemming, EDiscovery features, dark mode), PDF hit-highlighting without a plugin, portable mode, etc. Central endpoint connector for large systems. Active Directory permissions.

All purchases include one year of technical support, before ordering please read the End User License (EULA)

30-day trial

D66 dtSearch Desktop single-user. License covers use on two machines (e.g. a laptop and desktop PC) by the same individual.

Note: the setup program will ask for a serial number, check the box to install the “evaluation version” and click the Next button.

Free training

Training Articles (PDF)

Automatic deployment on a network (external link)

dtSearch Desktop/Network “getting started” video (YouTube)

D66 dtSearch Desktop with spider. License covers use on two machines (e.g. a laptop and desktop PC) by the same individual. $249

D66A dtSearch Desktop “investigative” license is an annual license for a single individual for forensics, etc. $1,225 

D66N dtSearch Network is for multiple-users (5 min) and license includes an extra free copy for use on a server. Quantity discounts:
Multicurrency checkout.

Price per user
5-24 $200
Contact us for higher price breaks.


Additional years of support from dtSearch UK can be ordered below, you can also upgrade from older versions at these discount prices.  BONUS:  customers on extended support receive priority support as well discounts and other special offers from time to time. See Terms & Conditions

D66UG Upgrade/extended support Desktop/Network

Number of users
Price per user Price per user
from 1 Feb 2024
1-4$75 single user is 2 years minimum$90 single user is 2 years minimum

D66NUG Upgrade/extended support dtSearch Network  (70+ user site) $3500 ($4200 from 1 Feb 2024)

Release Notes

Release Notes (current)

Release Notes (Beta)

User Manual