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Cisco Duo vs Gluu Flex comparison

 

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

Cisco Duo
Ranking in Access Management
4th
Average Rating
8.8
Reviews Sentiment
6.9
Number of Reviews
156
Ranking in other categories
Single Sign-On (SSO) (3rd), Authentication Systems (2nd), ZTNA as a Service (2nd), Cisco Security Portfolio (1st), Multi-Factor Authentication (MFA) (1st), AI Data Analysis (3rd)
Gluu Flex
Ranking in Access Management
25th
Average Rating
8.6
Reviews Sentiment
7.8
Number of Reviews
2
Ranking in other categories
Identity and Access Management as a Service (IDaaS) (IAMaaS) (31st)
 

Mindshare comparison

As of July 2026, in the Access Management category, the mindshare of Cisco Duo is 3.4%, down from 4.2% compared to the previous year. The mindshare of Gluu Flex is 2.0%, up from 1.3% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Access Management Mindshare Distribution
ProductMindshare (%)
Cisco Duo3.4%
Gluu Flex2.0%
Other94.6%
Access Management
 

Featured Reviews

Charles Slaustas - PeerSpot reviewer
Information Technology Contractor at Insight global
Supports seamless authentication for users across multiple organizations and personal portals
The features I use in Cisco Duo include Duo Pushes to confirm my identity to the device, and eventually as MFA security was increased, I actually had to use exchange passcodes. Sometimes, I have to go into the site and get into Cisco Duo to retrieve the passcode, and many of them have been two-factor, where the sites send a passcode that I have to enter into Cisco Duo. It has been more of the latter. I have not seen issues with lagging or crashing on Cisco Duo's end; it was usually on the client end, often because someone set up a bad upgrade or there were connection issues with the Cisco Duo cloud through the administrative site.
EV
Owner at Process2product
Facilitates improvement through feedback collection, quizzes, and event data generation
Gluu has a mobile app catering to field workers. Normal workers use the web app, a complete cloud-based solution. They log in on any device and access the system. Gluu filters and displays relevant information based on the user's role in the processes. Users can set it up to view as a viewer, worker, manager, or controller of the area. The front end offers different views but provides an easy dashboard for employees. On the dashboard, users can configure it to show tasks, related work instructions, and connected processes. It's very user-friendly, allowing end-users to understand their tasks and processes without needing in-depth knowledge.

Quotes from Members

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

Pros

"The technical support is of a very high level, and if you have a problem they will be able to support you, logging in remotely as an engineer to give assistance, and with the upgraded license the support is even better and they will do everything for you if you have a problem, so the support is extremely good."
"For me and my customers, the best feature is that it's very easy to integrate with the existing infrastructure. It takes a few minutes to configure it."
"Overall, it meets all my needs, including price point, and I've been very happy with it."
"The most valuable feature of Duo Security is the ability for the user to easily approve access. The application prompts the user, and they can see the location and the IP address. This makes it easy for the user to approve it and go through the process of logging in to the VPN."
"Compared to Cisco, the general support I experience is fantastic; I have no complaints about it."
"The integration with Azure Active Directory and the AWS cloud is amazing, as most products nowadays require the creation of a customized integration. With Duo Security, it was more like native integration, and it took me five minutes to register."
"Overall, it provides functionality and security with the two-factor authentication, enabling us to mitigate rogue access requests to our network and giving our workers the ability to work hybridly and tackle day-to-day jobs securely without having to come into the office."
"Cisco Duo is very user-friendly."
"Gluu has a mobile app catering to field workers. Normal workers use the web app, a complete cloud-based solution. They log in on any device and access the system."
"Most of the features are related to banking within this particular IT industry. Security and the market are also important features."
 

Cons

"I think Cisco Duo could be improved by including email authentication, as there is currently only SMS, SMS push, and code generation, but having email authentication could be beneficial when you don't have a phone."
"Cisco Duo is a modern product that does not support older applications, lacking backward compatibility. It should work on supporting legacy applications and legacy approaches."
"Cisco Duo is a really good product and I am very happy with it, but sometimes we have to authenticate multiple times, which may be part of our administration."
"I'm unsure how to disable the ping notification sound on my phone when using Cisco Duo. I don't know how to silence it."
"We had some trouble with the password reset function."
"I think Cisco Duo could improve the dashboard to make logging in and credential management more visible."
"An AI support robot or bot that provides direct answers to questions without requiring the search for facts or documents to find solutions would be an improvement."
"I'm not a big fan of relicensing products every year or two years, but that's the model at the moment. I prefer to go back to licensing perpetually or permanent licensing."
"The tool integrates AI into the process modeling aspect. I believe this addition will significantly enhance usability. Additionally, it might be beneficial to have the capability to import content from other tools into this platform. Our platform follows its business process modeling notation standard, which differs from BPM. It uses a simpler notation, making it easier. The ability to import content from other tools could accommodate users accustomed to different standards."
"I would like to see features around federation, authentication, authorization, and AI APIs with a ChatGPT interface."
 

Pricing and Cost Advice

"It's a bit confusing because we're on a three-year plan with a certain number of licenses, and we've gone over that number. They told us that when we renew, they will add all these licenses. We've expanded quickly, so everyone's kind of scared because no one knows what the bill is with the long pricing cycle."
"I believe the licensing model is excellent as it offers flexibility to our customers, allowing them to adopt a crawl, walk, or run approach."
"The pricing is pretty competitive. It's pretty cheap. Anybody can adopt it."
"Its price is reasonable. It is not highly expensive."
"The cost was reasonable. Licensing was pretty straightforward for a change."
"It was very reasonable."
"With regard to pricing, for a small business buying a one off, it's pretty expensive. If it's an enterprise that has thousands of employees, however, it's really nothing to protect your data because if your network goes down or it's breached, you're losing millions of dollars every minute. When it comes to a large enterprise, it's priced where it should be because you're talking business to business. You're not talking business to consumer."
"From a business perspective, it is a little bit costly. The licensing is on a per-user basis."
"The tool is cheaper compared to typical German products. I rate the product’s pricing a four out of ten."
"The price is reasonable."
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Top Industries

By visitors reading reviews
Financial Services Firm
12%
Manufacturing Company
10%
Comms Service Provider
7%
Computer Software Company
6%
Insurance Company
45%
Comms Service Provider
11%
Construction Company
9%
Media Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business62
Midsize Enterprise26
Large Enterprise78
No data available
 

Questions from the Community

How does Duo Security compare with Microsoft Authenticator?
We switched to Duo Security for identity verification. We’d been using a competitor but got the chance to evaluate Duo for 30 days, and we could not be happier. Duo Security is easy to configure a...
What is your experience regarding pricing and costs for Duo Security?
My experience with the pricing, the setup cost, and the licensing of Cisco Duo is that it is really inexpensive in the first place, but the value that I get in return is hard to beat, especially wh...
What needs improvement with Duo Security?
For the next release, Cisco Duo could be improved by adding touchless authentication and biometric features.
Ask a question
Earn 20 points
 

Also Known As

Duo Security
No data available
 

Overview

 

Sample Customers

Information Not Available
Dubai Municipality
Find out what your peers are saying about Cisco Duo vs. Gluu Flex and other solutions. Updated: June 2026.
902,894 professionals have used our research since 2012.