Mendix vs OpenLegacy comparison

Why PeerSpot?

Mendix and OpenLegacy are both solutions in the AI Software Development category. Mendix is ranked #12 with an average rating of 7.8, while OpenLegacy is ranked #62. Mendix holds a 0.5% mindshare in ASD, compared to OpenLegacy’s 0.4% mindshare. Additionally, 95% of Mendix users are willing to recommend the solution, compared to 80% of OpenLegacy users who would recommend it.

Mendix

Read 64 Mendix reviews

13,706 Views
2,193 Comparison Views

95% willing to recommend

OpenLegacy

Read 5 OpenLegacy reviews

2,881 Views
1,124 Comparison Views

80% willing to recommend

Mendix

OpenLegacy

Comparison Buyer's Guide

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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: September 2026).

Buyer's Guide

Mendix vs. OpenLegacy

September 2026

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Helped 915,341 peers since 2012

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

12th

Average Rating

8.2

Reviews Sentiment

6.9

Number of Reviews

Ranking in other categories

Mobile Development Platforms (1st), Rapid Application Development Software (4th), Low-Code Development Platforms (2nd), Agentic Automation (7th), Business Orchestration and Automation Technologies (11th)

OpenLegacy

Ranking in AI Software Development

62nd

Average Rating

7.6

Reviews Sentiment

6.2

Number of Reviews

Ranking in other categories

API Management (32nd)

Mindshare comparison

As of October 2026, in the AI Software Development category, the mindshare of Mendix is 0.5%, down from 1.7% compared to the previous year. The mindshare of OpenLegacy is 0.4%, up from 0.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.

AI Software Development Mindshare Distribution
Product	Mindshare (%)
Mendix	0.5%
OpenLegacy	0.4%
Other	99.1%

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.

Read full review

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."

"When I often want to pitch Mendix, if there is something out of the box that is not available, I can always extend Mendix. Whether it's the front end or the back end, It can be extended with Java. I've also built many widgets using Mendix."

"We find it intuitive and easy to use."

"Excellent support is offered for Mendix"

"Expect to half your delivery time for new products/services to business."

"In short, Mendix has improved our ability to delight our customers."

"The initial setup is easy."

"The low-code feature has helped my team and made my work easier because there are default templates, so we don't need to create or write code."

More Mendix pros

"The product has helped our business by allowing us to become more efficient in data handling."

"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, and we were able to build out the OpenLegacy parts very quickly, putting together a couple hundred APIs in six months."

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

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

"It is possible to solve larger legacy API issues on an enterprise level with this product."

"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 opens the door to connect modern web products to our old legacy system."

More OpenLegacy pros

Cons

"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."

"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."

"The code refactoring tools could be better, especially for applications running for years. It's not bad, but it could be smoother. Also, writing new widgets can be trickier than it should be for some people, but not if you're familiar with Mendix."

"We have tried to contact commercial support by phone and email but they never responded to any of our attempts."

"From Mendix 6 until 7, options on creating mobile apps have improved, but offline capabilities are not mature enough."

"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."

"Needs multiple database connections so an app can directly read/write data to/from multiple databases. This would enable easy splitting of big applications that have complex entity relationships."

"Improvements for Mendix include that sometimes it gets hung while loading."

More Mendix cons

"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'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."

"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."

"I would like to see SSL out-of-the-box. OpenLegacy certainly does SSL, but it was not the default for our use case. We are currently working with OpenLegacy to cross the SSL bridge and suspect that most users will want to do the same."

"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."

Pricing and Cost Advice

"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."

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

"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."

"The solution is a bit expensive compared to others"

"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."

"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."

"From a commercial point of view, we would like them to change that they currently sell it as a platform, but as a customer you have to decide upfront the usage of the platform. We would like to have Mendix sell it as a pay as you go model: You pay for what you use, and you don't pay for what you don't use."

"Pricing used to be complex, but Mendix has improved that quite a bit."

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

15%

Financial Services Firm

11%

Construction Company

Outsourcing Company

Construction Company

24%

Comms Service Provider

14%

Financial Services Firm

14%

Manufacturing Company

10%

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	30
Midsize Enterprise	7
Large Enterprise	25

No data available

Questions from the Community

What is your experience regarding pricing and costs for Mendix?

My experience with Mendix's pricing, setup cost, and licensing is that the pricing is moderate—not too low and not too high. The setup cost is average, and since it is a licensed-based tool, a basi...

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What needs improvement with Mendix?

Mendix has evolved as much as possible, and they are currently planning to automate tasks using AI agentics and other features. Every day presents a learning opportunity for developers using Mendix...

See all answers

What is your primary use case for Mendix?

My main use case for Mendix is to create enterprise-level applications for banking sectors and industrial expertise solutions with integration-level coding. One specific example of an application I...

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Comparisons

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Compared 6% of the time

Microsoft Power Apps vs Mendix

Compared 3% of the time

Salesforce Platform vs Mendix

Compared 3% of the time

Appian vs Mendix

Compared 3% of the time

Oracle Application Express (APEX) vs Mendix

Compared 3% of the time

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IBM DataPower Gateway vs OpenLegacy

Compared 19% of the time

Pipedream vs OpenLegacy

Compared 9% of the time

IBM API Connect vs OpenLegacy

Compared 8% of the time

MuleSoft API Manager vs OpenLegacy

Compared 7% of the time

Fiorano API Management vs OpenLegacy

Compared 7% of the time

More OpenLegacy Competitors

Product Reports

Buyer's Guide

Mendix

September 2026

Download Mendix product report

Buyer's Guide

OpenLegacy

September 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

September 2026

Free Report: Mendix vs. OpenLegacy

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

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