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OpenLegacy vs Zilliz Cloud 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

OpenLegacy
Ranking in AI Software Development
94th
Average Rating
7.6
Reviews Sentiment
6.2
Number of Reviews
5
Ranking in other categories
API Management (32nd)
Zilliz Cloud
Ranking in AI Software Development
27th
Average Rating
8.6
Reviews Sentiment
4.6
Number of Reviews
2
Ranking in other categories
Vector Databases (19th)
 

Mindshare comparison

As of June 2026, in the AI Software Development category, the mindshare of OpenLegacy is 0.4%. The mindshare of Zilliz Cloud is 0.4%. It is calculated based on PeerSpot user engagement data.
AI Software Development Mindshare Distribution
ProductMindshare (%)
Zilliz Cloud0.4%
OpenLegacy0.4%
Other99.2%
AI Software Development
 

Featured Reviews

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.
PrinceKumar2 - PeerSpot reviewer
Cloud Engineer at Rishabh Software
Managed vector search has reduced infrastructure overhead and empowers faster AI workloads
Zilliz Cloud has allowed us to focus on building the AI products without the overhead of operating vector database infrastructure. The best features Zilliz Cloud offers, in my opinion, include high-performance similarity search, managed infrastructure for cluster maintaining, infrastructure scaling, backup management, storage planning, Milvus compatibility, and metadata filtering. The offering of this managed infrastructure of a vector database is most useful for me, and the high-performance similarity search is useful in my case. Regarding the similarity search, it delivers low latency retrieval and maintains strong relevance in returned units, which is particularly useful for me. Zilliz Cloud has positively impacted my organization because initially, we spent too much time hosting self-hosted Milvus and planning for infrastructure that did not yield very useful results. Now, we do not have the overhead of managing infrastructure for my vector database, so we can directly focus on building our RAG system and AI workload. Time saved is the first and foremost outcome since all the time we invested in self-hosting Milvus has been redirected towards building the AI workloads. Time has definitely been saved, which is the primary benefit of using Zilliz Cloud.

Quotes from Members

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

Pros

"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."
"OpenLegacy opens the door to connect modern web products to our old legacy system."
"The product has helped our business by allowing us to become more efficient in data handling."
"Without OpenLegacy, it would take us several months to create the same services."
"OpenLegacy produces a war file which includes everything you need to deploy a Tomcat server."
"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."
"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."
"The best feature of Zilliz Cloud is that it helps in very high-performance vector search, and it is also very scalable, with very low latency that helps provide faster results."
"Zilliz Cloud has allowed us to focus on building the AI products without the overhead of operating vector database infrastructure."
 

Cons

"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."
"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."
"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."
"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."
"Customer support for the product is slow and not very good. It makes using the product difficult if you need help quickly."
"It can be improved a little bit on the search functionality."
 

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
Construction Company
25%
Comms Service Provider
13%
Financial Services Firm
11%
Insurance Company
10%
No data available
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
No data available
 

Comparisons

 

Overview

 

Sample Customers

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...
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