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Expel vs ReliaQuest GreyMatter comparison

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Comparison Buyer's Guide

Executive Summary

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Expel
Ranking in Managed Detection and Response (MDR)
14th
Average Rating
8.6
Reviews Sentiment
7.8
Number of Reviews
2
Ranking in other categories
SOC as a Service (5th)
ReliaQuest GreyMatter
Ranking in Managed Detection and Response (MDR)
19th
Average Rating
9.0
Reviews Sentiment
7.1
Number of Reviews
3
Ranking in other categories
Digital Risk Protection (11th), Extended Detection and Response (XDR) (32nd)
 

Mindshare comparison

As of November 2026, in the Managed Detection and Response (MDR) category, the mindshare of Expel is 2.4%, up from 2.1% compared to the previous year. The mindshare of ReliaQuest GreyMatter is 1.4%, down from 1.8% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Managed Detection and Response (MDR) Mindshare Distribution
ProductMindshare (%)
Expel2.4%
ReliaQuest GreyMatter1.4%
Other96.2%
Managed Detection and Response (MDR)
 

Featured Reviews

reviewer2917971 - PeerSpot reviewer
Founder And Principal Technical Consultant at a consultancy with 51-200 employees
Expel has transformed MDR workflows and now streamlines phishing response and SOC 2 audits
Some of the best features Expel offers is the ease of use. Ease of use is top of mind. It also provides an opportunity for me to replace my SOC. Not necessarily replace my SOC because I utilize contractors on an as-needed basis, but it allows me to stay lean. I do get 24/7 monitoring, although they recently shortened up on the 24/7 monitoring offering. It also allows me to augment the existing SOC that I have for larger companies or larger enterprises that rely on me for that. It then extends the use of the tools I already have, as I mentioned with SentinelOne. Octa is another that comes to mind, and then for larger organizations that use CrowdStrike.
Omkar Korulkar - PeerSpot reviewer
Technology Analyst at a tech vendor with 10,001+ employees
Centralized visibility has improved SOC investigations and supports faster, more accurate incident response
I think ReliaQuest GreyMatter could be improved further in a few areas. First, I want to see more flexibility in dashboard customization so analysts can configure views based on their roles and investigation requirements. Second, improving alert correlation accuracy and reducing overall false positive rates would help analysts focus on genuine possible threats rather than spending time validating repetitive low-priority alerts or false positives. Third, more detailed investigation timelines, better reporting capabilities, and simpler investigation integration configuration would make the platform more effective. I suggest continuously improving automation workflows to reduce repetitive manual tasks while allowing analysts to maintain control over critical response actions. Overall, I think these enhancements can make the platform more user-friendly and improve the efficiency of SOC operations. One additional improvement would be enhancing the investigation experience by providing more detailed context directly within the alert. For example, having a clear incident timeline, related alerts, historical activity, and threat intelligence information available in one place would make investigations easier. I believe these improvements would make day-to-day SOC operations smoother and allow analysts to focus more on proactive threat hunting and other complex investigations.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"Expel's customer support is great."
"Their threat hunting protocol and process with AI and machine learning are strong, allowing for active and rapid responses."
"ReliaQuest GreyMatter has helped us to reduce security incidents by 89%, which is a significant amount of incidents we have seen."
"One of the best features that ReliaQuest GreyMatter offers is the ability to bring together security tools and data that support threat investigation, detection, and response."
"ReliaQuest GreyMatter saves around 60% of time or resources."
 

Cons

"The one area where Expel may not measure up is if a customer requires a managed SIEM as part of their overall solution. There's a gap there, and solutions might require third-party assistance for management."
"I think the 24/7 SOC could be improved."
"Areas that have room for improvement include user interface and integration."
"ReliaQuest GreyMatter is stable to a certain extent, but there is still some room for improvement."
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Construction Company
10%
Computer Software Company
8%
Manufacturing Company
7%
Financial Services Firm
10%
Manufacturing Company
9%
Construction Company
8%
Comms Service Provider
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Questions from the Community

Ask a question
Earn 20 points
What needs improvement with ReliaQuest GreyMatter?
Areas that have room for improvement include user interface and integration.
What is your primary use case for ReliaQuest GreyMatter?
I use ReliaQuest GreyMatter for detection and response, XDR, and SIEM. The best features I like about GreyMatter the most are its efficiency and user experience.
 

Also Known As

Workbench, Expel SOC-as-a-Service
No data available
 

Overview

 

Sample Customers

Amanda Fennell CSO
Information Not Available
Find out what your peers are saying about CrowdStrike, SentinelOne, Huntress and others in Managed Detection and Response (MDR). Updated: October 2026.
921,523 professionals have used our research since 2012.