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X1 Professional Client

Download Editors' Rating:
Editors' Rating:
Average User Rating:
out of 51 votes out of 3 votes

Quick Specs

  • Version:
  • Total Downloads:
  • Date Added:
    Mar. 24, 2014
  • Price:
    Free to try (14-day trial); $49.95 to buy (Buy it now)
  • File Size:
  • Downloads Last Week:
  • Platform:
  • Product ranking:
    #16 in Search Tools

Editors' Review


X1 Professional Client is an enterprise-class desktop search application that indexes and searches more than 500 file types, including all major e-mail clients, as well as local and networked drives, folders, and files. It can find e-mail messages and attachments, system files and documents, appointments and calendar entries, contacts, and even pictures, music, and Web sites. It's suitable for corporate networks in both small and large companies, including excellent support, but it's not out of the range of individuals looking for a comprehensive desktop search option.

X1's interface looks like it means business, with the familiar Windows layout of toolbars and tree-view navigation panel anchoring a main view with tabs for Email, Inbox, Attachments, Tasks, Contacts, and other categories. X1 began indexing our system's files as soon as we opened it, populating each tab's view with individually searchable file lists. X1 displays results while you type, a speedy method that often jogs the memory or suggests a potentially better answer. We jumped right in, entering several searches on various tabs, and X1 instantaneously returned hits with our search term and the specified file type highlighted in the list of results. X1 made quick work of our most annoying searches, those items we should be able to find easily but never do. We clicked "See all X1 search rules" and received an HTML page of search functions that included not only basic Boolean operators but also column, range, and negative searches as well as advanced search options that can, for example, distinguish an exact phrase from an abbreviated one. From the X1 interface, we could copy, save, zip, and move results; reply to, forward, and archive messages and files; and even schedule meetings. The program can also place a handy search box on the Windows taskbar.

Do you use more than one e-mail client or browser? Have you changed clients or accounts? Do you use SharePoint, remotely hosted files, or a company network? Have you ever tried to find an attachment to an old e-mail message, or a contact's phone number, or an appointment from last year? X1 Professional Client can handle it all. It's not only the fastest and most powerful desktop search tool we've tested, it's one of the easiest to use, too.

Editors' note: This is a review of the full version of X1 Professional Client 6.7.2. The trial version is limited to 14 days.

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Publisher's Description

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User Reviews

Results 1–3 of 3

2 stars

"I wasted $50"

June 20, 2016  |  By GPabloAndersen

2016-06-20 20:29:54  |  By GPabloAndersen

 |  Version: X1 Professional Client 6.7.4


At times it finds things.


No support, unless you pay another $25/yr
Never keeps indexing schedules, just sets all back to defaults, so I had to keep the main one paused most all the time.
Consequently, uses up CPU.
Recently it won't find files, just emails.
No support. I honestly wondered if the forum search boxes were linked to a different website.


Sorry to be so negative, I've just had a very frustrating year or so trying to get this software to be helpful. What baffles me more is that it's supposed to be one of the best.

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5 stars

"The most important productivity tool I use."

February 18, 2016  |  By gwirick

2016-02-18 14:14:54  |  By gwirick

 |  Version: X1 Professional Client 6.7.4


Allows you to find anything within seconds, with amazingly smart search filters. If you're saying, "I can do that with Outlook search or with Google desktop", you have no idea what you're missing. X1 so much more powerful and simple. For example show me any email I've sent where the word inside an attachment is "compliance". Boom- 5 seconds to find it. I amaze my colleagues all the time.


For a while X1 got behind in technology, not supporting 64 Bit or connecting to cloud apps (I've been using X1 for years). However, in the past 18 months or so, they've really upped their game. X1 constantly improves the UI, and supports more and more modern apps. For example, you can find any documents stored in


Once you use X1, you can never go back.

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5 stars

"Still the Best Desktop Search & Indexing Utility Around"

April 23, 2014  |  By tonyny77

2014-04-23 11:47:26  |  By tonyny77

 |  Version: X1 Professional Client 6.7.4


+ Lightning fast instantly displaying contents of search results
+ Flexible, powerful and highly customizable search interface
+ Easy to use and easy to maintain
+ Displays contents of hundreds of file types without having to open the file/document
+ Works like a charm


Isn't free, but you get what you pay for and it's well worth the cost.


I've been using X1 for nearly ten years and for all that time, it's been the best desktop search and indexing utility around. Competing products I've tried can't come close.

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Results 1–3 of 3

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Full Specifications

What's new in version 6.7.4
Version 6.7.4 improved indexing calls to prevent some cases of index corruption during build, merge, and backup operations and enabled Lotus Notes auto-signature capability, when using the New email PSA.
Publisher X1 Technologies
Publisher web site
Release Date March 24, 2014
Date Added March 24, 2014
Version 6.7.4
Category Internet Software
Subcategory Search Tools
Operating Systems
Operating Systems Windows XP/2003/Vista/Server 2008/7
Additional Requirements Microsoft .NET Framework 3.0
Download Information
File Size 20.51MB
File Name x1_pro_client_dotNet_4054eu.exe
Total Downloads 874,293
Downloads Last Week 7
License Model Free to try
Limitations 14-day trial
Price $49.95

Previous Versions:

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