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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
158
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 August 2026, in the Access Management category, the mindshare of Cisco Duo is 3.2%, down from 3.6% compared to the previous year. The mindshare of Gluu Flex is 2.0%, up from 1.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Access Management Mindshare Distribution
ProductMindshare (%)
Cisco Duo3.2%
Gluu Flex2.0%
Other94.8%
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

"Duo Security gives us an additional layer of security that would give us added confidence that our network will be less likely to get hacked, compromised, or otherwise."
"The feature that my organization started using more recently in Cisco Duo is offline authentication."
"It is really scalable. It is easy once you get an application in. You can import users from Active Directory and enroll users really fast."
"Duo Security just adds another layer; it's a great addition to the security of any network infrastructure."
"I now have the Identity Intelligence feature, which makes me very happy, and it was indeed the big feature, the big step ahead that we achieved thanks to Cisco Duo."
"I love Duo Security's push notifications. It's simple, fast, and secure. From the user's perspective, the solution is seamless. The security aspect is great."
"Cisco Duo benefits my organization because we do not have too many logins since everything is in one place and we can use Cisco Duo for VPN, applications, and cloud solutions."
"It has definitely made our company more secure."
"Most of the features are related to banking within this particular IT industry. Security and the market are also important features."
"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."
 

Cons

"I think we'd need more experience to learn Cisco Duo because we're just at the beginning of using it."
"The experience with customer support and tech support when I first started with Cisco Duo was lacking on some parts where we were having issues."
"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 believe Cisco Duo needs to be improved on the delay process because there is a delay when we send a Duo Push or when we are signing into any applications."
"Technical support seems to be lacking. It takes a long time for them to come back to the customer."
"Regarding the Premier licensing, it is a little bit pricey, but it is in the market range with the competitors."
"One downside of Cisco Duo is the expense, as there are clients that can afford only the basic package, which does not include Geo-fencing, leaving them unable to pay for the more expensive level, which I do not feel justifies the double price of that upper tier version."
"We have had instances where Duo Security stops working on a user's device, which we have fixed by uninstalling and then reinstalling it."
"I would like to see features around federation, authentication, authorization, and AI APIs with a ChatGPT interface."
"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."
 

Pricing and Cost Advice

"I haven't seen any information on the pricing in four years, so I can't comment on that."
"The licensing is very good because it does not cost a lot of money. It's affordable for all-sized customers, including enterprises. There is an additional cost for premium support."
"The pricing is pretty competitive. It's pretty cheap. Anybody can adopt it."
"My experience with pricing, setup costs, and licensing has been good, with no issues. I am pleased that the prices remained stable after Cisco acquired the solution."
"Price-wise, the solution has been very, very reasonable...Licensing is the last thing I think about Duo Security because it's so easy, and I had no problems with it."
"My experience with the pricing, setup cost, and licensing of Cisco Duo has been great. We've been there for 10 years. While we haven't gone through the setup part for a while, licensing is straightforward and convenient for higher education because student populations are included. So, we don't have to pay extra for it. We just pay for our knowledge workers, which has been great, and the cost is reasonable."
"I rate the product pricing a seven out of ten."
"The pricing was a lot more than what we were paying for our previous solution."
"The price is reasonable."
"The tool is cheaper compared to typical German products. I rate the product’s pricing a four out of ten."
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Top Industries

By visitors reading reviews
Financial Services Firm
11%
Manufacturing Company
8%
Outsourcing Company
8%
Comms Service Provider
8%
Insurance Company
43%
Comms Service Provider
11%
Construction Company
10%
Media Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business63
Midsize Enterprise26
Large Enterprise79
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?
It is a little bit expensive, but with security, we cannot compromise on it.
What needs improvement with Duo Security?
To improve Cisco Duo, we have some third-party hardware, and for integrations with that, we need more user-friendly integrations since third-party integration can present a lot of compatibility iss...
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: August 2026.
909,725 professionals have used our research since 2012.