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Mendix vs OpenLegacy 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

Mendix
Ranking in AI Software Development
7th
Average Rating
8.2
Reviews Sentiment
6.8
Number of Reviews
62
Ranking in other categories
Mobile Development Platforms (2nd), Rapid Application Development Software (5th), Low-Code Development Platforms (3rd), Agentic Automation (5th), Business Orchestration and Automation Technologies (12th)
OpenLegacy
Ranking in AI Software Development
76th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
5
Ranking in other categories
API Management (34th)
 

Mindshare comparison

As of March 2026, in the AI Software Development category, the mindshare of Mendix is 0.7%, down from 2.5% compared to the previous year. The mindshare of OpenLegacy is 0.5%. It is calculated based on PeerSpot user engagement data.
AI Software Development Mindshare Distribution
ProductMindshare (%)
Mendix0.7%
OpenLegacy0.5%
Other98.8%
AI Software Development
 

Featured Reviews

Mitchel Mol BGS - PeerSpot reviewer
CTO at Blue Green Solutions
Has improved development quality and speed but has introduced persistent IDE slowdowns
In recent years, the IDE has been more buggy and slower, and although there have been more features added, I would like to see more stability, as some areas that used to work for a fairly long time are now slower in my development, which feels like a step back. I choose a seven mainly due to the issues we've faced with slowdowns and bugs during development, while runtime has been very stable, and the overall output on Mendix platform is still good; there is definitely some room for improvement, and I would probably have given it an eight or even a nine if those issues weren't hurting my developer output for the past few years. Overall, Mendix platform is stable, but the IDE could be better.
reviewer1042905 - PeerSpot reviewer
VP, Chief Enterprise Integration Architect at a financial services firm with 10,001+ employees
The biggest advantage is how simple the technology was.
I'd like to see OpenLegacy develop its low-code/no-code (LCNC) solutions. They've expanded somewhat their horizons for integration beyond mainframe CICS, which is their sweet spot. They have some tooling in that area, but it's not as good as it needs to be. OpenLegacy handles the bread-and-butter TP monitoring stuff, but I am working for one of the six banks in the United States still using the Hogan mainframe, which has a slightly proprietary mechanism. But OpenLegacy currently doesn't have a connector for Hogan. So it would help if they could build one. That would appeal to financial institutions that still use Hogan, like US Bank, Wells Fargo, KeyBank, and Vanguard.

Quotes from Members

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

Pros

"The solution was good in our tests but we could not get a hold of the company for further inquiries."
"In our biggest project to date, we replicated with somebody else, it took three years to do uncompleted, and we replicated it in about six months to build an end-to-end application for customer use."
"Mendix code and coding logic are very visual. It looks like a flow chart rather than lines of code. Rapid development is what drew us to Mendix."
"Enables us to rapidly create a complex application; we are also able to customize features that stakeholders in the corporation want to see, something that could not be done with other software, and our workflows and processes have evolved and improved, as the fast iterations allow us to be nimble, get feedback from users, and do rapid updates."
"The software is mainly designed and built by business engineers instead of software engineers, which leads to an immediate fit between delivered software and what the users really want."
"The most valuable features of the product are its ease of use and speed. My friend and I find it helpful as a team of just two developers."
"They see faster time to market for new software, improved maintainability, and higher user satisfaction as the main improvements."
"Expect to half your delivery time for new products/services to business."
"Using mainframe programs (not screens), the OpenLegacy services do not require any changes by the mainframe programmers, thus reducing development cycles."
"It is possible to solve larger legacy API issues on an enterprise level with this product."
"Without OpenLegacy, it would take us several months to create the same services."
"OpenLegacy provides a way to go from the outside world to the legacy mainframe, to move the old standard application to a REST API application. New digital services can be created in a few clicks and this can be done easily by COBOL programmers."
"It is possible to connect a service to a mainframe program or back transaction in a matter of minutes or hours at the most."
"The product has helped our business by allowing us to become more efficient in data handling."
"OpenLegacy opens the door to connect modern web products to our old legacy system."
"Using OpenLegacy, the exposure of services is far easier and quicker. In many cases, exposure of services requires just a few clicks and takes only minutes. In very complex cases, it still only takes half a day. Without OpenLegacy, it would take us several months to create the same services."
 

Cons

"One thing I would like to improve is the support system offered by Mendix. It can sometimes take a while to get the help I need when I'm using Mendix."
"There are not enough developers who are using Mendix. The knowledge base available online and in the market is not as rich as other competitors."
"The area of this product that needs improving is the templates in which the user uses to create documents."
"I would also like to see automatic adjustment to the Java Heap, whenever an application load becomes too much for the application. It could also use hot database replication."
"What is lacking is the support of higher level modeling features, like the modeling you do is relatively low level, yet it is still close to programming. We would like to see a more business-oriented modeling environment, like BPMN."
"Mendix is not cheap. License fees go sky high when using it as a business to consumer platform."
"Mendix could improve in customization and UI, UX flexibility, native mobile development, and agile tooling for developers."
"Mendix needs to think about itself offering machine learning and artificial intelligence."
"I'd like to see OpenLegacy develop its low-code/no-code (LCNC) solutions. They've expanded somewhat their horizons for integration beyond mainframe CICS, which is their sweet spot. They have some tooling in that area, but it's not as good as it needs to be."
"Debugging and logging for programmers could be better."
"Debugging and logging for programmers could be better."
"Customer support for the product is slow and not very good. It makes using the product difficult if you need help quickly."
"The pricing of the solution could be more flexible and allow for once-off payment versus annual licensing."
"We would also be more than happy if the product had the option to work in the opposite direction – the ability to consume REST/SOW services in the outer world from the mainframe."
"I would like to see SSL out-of-the-box. OpenLegacy certainly does SSL, but it was not the default for our use case."
"The pricing of the solution could be more flexible and allow for once-off payment versus annual licensing. This would be more appealing to companies in Latin America."
 

Pricing and Cost Advice

"There is a license required to use Mendix. The solution's price is high, but it is best suited for enterprise companies that have the budget. It is not for small or medium-sized businesses."
"Initially, we started with a year for approximately $25,000, and if we need to expand the number of seats then we will increase it."
"Its cost is higher than competitors. The cost mostly includes licensing. It is charged per user. The cost model could be better. When you have a big company, what does per user mean? If I have a company where I have 40,000 people who will go to access it but only 200 do, how do you license it and who do you pay for? If they hit it once, do you pay for it? The licensing is complex for a big company. It is easy for us to buy all we can eat, get an enterprise license agreement, and call it good."
"Mendix seems a bit expensive. But in terms of wanting to have less developers and higher velocity, the total cost of ownership is fine. It's not cheap, though."
"Mendix is not open source, but its license cost is cheap, particularly when compared to the Appian license. The license model would depend on how many users you have and how many applications you are creating. If you are creating a single app, you just need to have a single app license, so it's free. If you want a multiple app license to cover two thousand or three thousand users, for example, internal users or external users, then you need to pay for the license. There's also a license model for above three thousand or four thousand, or five thousand internal and external users."
"Licensing costs are similar to those for all other IT technology, but they vary by region."
"The solution is a bit expensive compared to others"
"Pricing used to be complex, but Mendix has improved that quite a bit."
"The pricing of the solution could be more flexible and allow for once-off payment versus annual licensing. This would be more appealing to companies in Latin America."
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Top Industries

By visitors reading reviews
Manufacturing Company
14%
Financial Services Firm
11%
Computer Software Company
8%
Retailer
5%
Construction Company
21%
Insurance Company
13%
Financial Services Firm
11%
Comms Service Provider
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business28
Midsize Enterprise7
Large Enterprise25
No data available
 

Questions from the Community

What is your experience regarding pricing and costs for Mendix?
I do not have much experience with the pricing, setup cost, and licensing because the sales or business team usually handles that, and as a developer, I don't have a clear idea.
What needs improvement with Mendix?
I think Mendix can be improved by supporting automated tests more easily. For example, Mendix can add some IDs for each component to build the automation tests more easily.
What is your primary use case for Mendix?
I use Mendix to build a system about the consultation of APIs. We are using Mendix to build a system to check SAP, which is another system, and we use APIs to bring information from SAP to this pro...
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Comparisons

 

Overview

 

Sample Customers

Genzyme, TNT, Yahoo, Capgemini, Roche, D&B, Aegon, kpn, AZL, Sky, Arch, Penn State Univeristy, BancABC
Many of openLegacy's global customers are among the Global 100 companies. Review case studies in these industries: Agriculture, Airport Authority, Automotive, Auto, Finance, Insurance, Government, Healthcare, Manufacturing, and Retailwww.openlegacy.com/case-studie...
Find out what your peers are saying about Mendix vs. OpenLegacy and other solutions. Updated: February 2026.
885,311 professionals have used our research since 2012.