Mendix vs OpenLegacy comparison

Mendix and OpenLegacy are both solutions in the AI Software Development category. Mendix is ranked #10 with an average rating of 8.0, while OpenLegacy is ranked #101. Mendix holds a 0.7% mindshare in ASD, compared to OpenLegacy’s 0.5% mindshare. Additionally, 95% of Mendix users are willing to recommend the solution, compared to 80% of OpenLegacy users who would recommend it.

Mendix

Read 63 Mendix reviews

9,064 Views
1,088 Comparison Views

95% willing to recommend

OpenLegacy

Read 5 OpenLegacy reviews

1,455 Views
480 Comparison Views

80% willing to recommend

Mendix

OpenLegacy

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Executive Summary

We performed a comparison between Mendix and OpenLegacy based on real PeerSpot user reviews.

Find out in this report how the two AI Software Development solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Mendix vs. OpenLegacy Report (Updated: April 2026).

Buyer's Guide

Mendix vs. OpenLegacy

April 2026

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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

10th

Average Rating

8.2

Reviews Sentiment

6.8

Number of Reviews

Ranking in other categories

Mobile Development Platforms (1st), Rapid Application Development Software (4th), Low-Code Development Platforms (2nd), Agentic Automation (5th), Business Orchestration and Automation Technologies (11th)

OpenLegacy

Ranking in AI Software Development

101st

Average Rating

7.6

Reviews Sentiment

6.2

Number of Reviews

Ranking in other categories

API Management (33rd)

Mindshare comparison

As of May 2026, in the AI Software Development category, the mindshare of Mendix is 0.7%, down from 1.8% 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
Product	Mindshare (%)
Mendix	0.7%
OpenLegacy	0.5%
Other	98.8%

AI Software Development

Featured Reviews

Mitchel Mol BGS

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.

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reviewer1042905

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.

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Quotes from Members

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

Pros

"Overall the platform is really good."

"The most valuable features are the decorative style, model-driven development, and the fact that Mendix validates flows. Mendix is quick to develop because it's a low-code platform. It's very robust, flexible, open, and scalable. It's for a low-code customer. The tooling is also really good and it has mobile capabilities."

"We were able to completely refactor middleware from SAP BPM to Mendix in a relatively short time and the product created a common language between developers and business analysts that facilitated the translation of business requirements, frequent validation, and modification to the technical solution, reducing a few development cycles which is crucial with short-term projects."

"The most valuable features of Mendix includes the most vital logic building component called the microflows which cuts down the need to write code and instead using logic blocks to interpret the way the function should work."

"What I found most valuable in Mendix is that it's very much suitable for mobile apps such as native Android or IOS supported mobile apps. The multiple features of the platform are very, very attractive and very popular. Mendix has technical features such as microflows and nanoflows. You can also access data models in the platform. These are the features that are very, very strong in Mendix. I got my hands dirty on other low-code platforms, but I have not seen such strong features in them compared to the microflows, nanoflows, and data model access that are in Mendix, including creating and integration. The platform has out-of-the-box adapters or out-of-the-box-connectors that you can integrate with different interface applications such as SAP, Salesforce, Oracle EBS, etc."

"The most valuable features of Mendix are the drag and drop functions, the data entities, domain models, and all the related features."

"I highly regard Mendix because of its proper support, troubleshooting options, extensive learning path, and the availability of different types of exams."

"The best features Mendix offers in my experience include its readiness to go to market, which reduces the effort and time consumed in developing an application end-to-end."

More Mendix pros

"The speed of development of production, especially in specific environments like IBM mainframes, has been valuable."

"Using mainframe programs (not screens), the OpenLegacy services do not require any changes by the mainframe programmers, thus reducing development cycles."

"OpenLegacy produces a war file which includes everything you need to deploy a Tomcat server."

"Opens the door to connect modern web products to an old legacy system."

"Without OpenLegacy, it would take us several months to create the same services."

"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."

"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."

"The biggest advantage of OpenLegacy was how simple the technology was. We were able to build out the OpenLegacy parts very quickly. We put together a couple hundred APIs in six months."

More OpenLegacy pros

Cons

"As mentioned, there needs to be an increase in the number of the UI components so that other platforms will not be used in place of the UI interface of Mendix, such as Angular."

"It could use a more comprehensive widget creation studio in the IDE."

"The vendor should focus more on the opinion of the users and make improvements"

"While the documentation is good, the development box could be better."

"UX/UI design is still the largest area that can be improved, or at least be made easier."

"It needs to provide an overview of model versioning control for the sake of the review process; better SCRUM board; an overview of model changes from the repository through Sprintr (SCRUM board). Also, a choice between versioning control system would be nice."

"Since it's low-code, I would like Mendix to be web-based, so we shouldn't need to install Mendix to create an app."

"Occasionally, there is downtime if an upgrade is happening in the application."

More Mendix cons

"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."

"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."

"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."

"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."

"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."

More OpenLegacy cons

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."

"I would not recommend the solution to small and medium-sized businesses because it’s expensive. It’s great for big organizations. I rate the pricing as a three out of ten."

"Licensing costs are similar to those for all other IT technology, but they vary by region."

"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."

"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 licensing cost is based on the number of apps you have on the server. At the basic level, it is free of charge, so that seems reasonable, but once you go beyond that, and when it comes to the number of users on the app, that basic structure doesn't work, and the pricing tends to get a little bit steep."

"The solution is a bit expensive compared to others"

"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."

More Mendix pricing and cost advice

"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

13%

Financial Services Firm

11%

Computer Software Company

Construction Company

26%

Comms Service Provider

13%

Financial Services Firm

12%

Insurance Company

10%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	29
Midsize Enterprise	7
Large Enterprise	25

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.

See all answers

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.

See all answers

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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Compared 11% of the time

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Product Reports

Buyer's Guide

Mendix

April 2026

Download Mendix product report

Buyer's Guide

OpenLegacy

April 2026

Download OpenLegacy product report

Overview

Mendix offers a robust low-code platform that accelerates application development and enhances business-IT collaboration with strong integration and customization capabilities.

Mendix enables rapid prototyping with visual modeling tools like microflows, aiding seamless cloud deployment with scalability and security. Its low-code environment and reusable widgets support easy REST and SOAP integration. Application development is efficient, bridging business needs with minimal coding effort.

What are Mendix's key features?

Rapid Application Development: Speeds up development with low-code tools and visual modeling.
Integration Capabilities: Supports easy integration with REST, SOAP, and systems like SAP.
Visual Modeling Tools: Offers microflows for simplified process automation.
Cloud Deployment: Provides robust scalability and secure cloud-based solutions.
Customization: Flexible UI components and reusable widgets for tailored solutions.

What benefits should users look for in reviews?

Faster Time-to-Market: Accelerates development timelines with low-code features.
Flexibility: Adapts to diverse applications in banking, insurance, and manufacturing.
Scalability: Supports growth with strong cloud infrastructure.
Enhanced Collaboration: Bridges business and IT for seamless digital execution.
Integration Ease: Easily integrates with existing systems and improves workflows.

In banking, insurance, and manufacturing, Mendix is adopted for developing web and mobile applications. It aids in automating processes and integrating seamlessly with existing systems like ERP. Businesses leverage Mendix's flexibility in creating scalable and customized applications to streamline workflows and drive digital transformation efforts.

Mendix

OpenLegacy integrates legacy customer data with REST APIs, speeding up mobile transactions and code updates while simplifying API development. Its open-source platform offers flexibility, benefiting mainframe environments and Tomcat server deployments.

OpenLegacy is crucial for organizations aiming to integrate modern web applications with legacy systems. The platform is widely used in financial and logistics sectors to enable quick access to customer data and transactions, effectively monetizing mainframe assets. By facilitating the rapid creation of numerous APIs, OpenLegacy supports seamless interactions between applications, allowing modern web form inputs into legacy systems. Its flexibility and extensive capabilities simplify API development and deployment, proving valuable for those managing day-to-day banking and transaction data. However, room for improvement includes better debugging, logging, SSL integration, flexible pricing options, and support availability, especially for Hogan mainframe users.

What features define OpenLegacy?

REST API Integration: Facilitates integration with mobile transactions.
Faster Code Updates: Delivers efficiency in code changes for mainframe environments.
Open-Source Flexibility: Offers customization and broad capabilities.
Tomcat Deployment: Supports straightforward deployment via Tomcat servers.
Rapid API Development: Enables swift creation of multiple APIs.

What ROI benefits should users expect?

Legacy System Monetization: Transforms mainframe assets into profit.
Improved Integration: Enhances access to critical customer data and transactions.
Efficient Operations: Streamlines daily banking and transaction management.
Cost-Effectiveness: Flexibility and open-source nature reduce expenses.
Enhanced Interoperability: Allows seamless interaction between old and new applications.

Financial and logistics companies leverage OpenLegacy to link web applications with legacy systems, ensuring quick customer data and transaction access. This integration supports rapid solution building and efficient management of banking and transaction data, particularly benefiting institutions like US Bank and Wells Fargo needing comprehensive Hogan mainframe connectors.

OpenLegacy

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...

Buyer's Guide

Mendix vs. OpenLegacy

April 2026

Free Report: Mendix vs. OpenLegacy

Find out what your peers are saying about Mendix vs. OpenLegacy and other solutions. Updated: April 2026.

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