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IBM Event Streams vs PubSub+ Platform comparison

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Comparison Buyer's Guide

Executive SummaryUpdated on Jan 27, 2025

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

IBM Event Streams
Ranking in Message Queue (MQ) Software
12th
Average Rating
8.4
Reviews Sentiment
7.8
Number of Reviews
3
Ranking in other categories
No ranking in other categories
PubSub+ Platform
Ranking in Message Queue (MQ) Software
10th
Average Rating
8.6
Reviews Sentiment
7.0
Number of Reviews
20
Ranking in other categories
Message Oriented Middleware (MOM) (2nd), Event Monitoring (13th), Streaming Analytics (14th)
 

Mindshare comparison

As of November 2026, in the Message Queue (MQ) Software category, the mindshare of IBM Event Streams is 2.9%, up from 1.4% compared to the previous year. The mindshare of PubSub+ Platform is 5.7%, up from 4.4% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Message Queue (MQ) Software Mindshare Distribution
ProductMindshare (%)
PubSub+ Platform5.7%
IBM Event Streams2.9%
Other91.4%
Message Queue (MQ) Software
 

Featured Reviews

Ismail El-Dahshan - PeerSpot reviewer
CEO at areebah
Efficiently calculates data flow and provides ease of integration
We seamlessly integrated IBM Event Streams with real data processes by establishing data consumers. The consumers act as end-users, initiating requests and receiving responses from the data provider. The system efficiently processes and calculates the data flow within the cluster using DLP functionality. It provides an easy integration, particularly in creating a platform and facilitating interactions between subscribers and service providers. I rate it an eight out of ten.
Deepankar Bbhowmick - PeerSpot reviewer
Integration Architect at a tech services company with 11-50 employees
Messaging design has become visual and reliable and now supports fast microservice communication
The unique functions I appreciate about PubSub+ Platform are that it allows me to design my solution in a graphical manner, which is not available in many other products, and the design can also be pushed to the actual infrastructure layer, making it quite advantageous. Mesh technology is useful in scenarios where different geographies have to be connected, although such situations are not commonly found. It is beneficial but not a super-used feature of PubSub+ Platform. The event replay function is quite mature in PubSub+ Platform, allowing me to replay messages that are days in the past, which is a good feature. The main benefits PubSub+ Platform provides for the end-user include building a robust and scalable system with very low network latency, which improves the customer experience, whether using mobile phones or applications. This type of messaging framework is extremely important, and Solace is a very good product in that space. Nowadays, most applications are built using microservices technology, with small microservices interchanging messages via PubSub+ Platform. Without it, realizing a scalable system would not be possible; for example, one cannot have Netflix or similar services that require quick data transit and a good user experience, ensuring that data cannot be lost in transit. The analytics part of PubSub+ Platform is quite useful as it can connect with many analytical software tools, mainly for analysis of system logs, such as Splunk, DataDog, or Prometheus. It has the flexibility to connect with any of these and supports OpenTelemetry, which is not available in many other products, making traceability very easy. I can see how a message travels from a source system to the target system, end-to-end, along with what happens to that message along the path, making the analytics quite good.

Quotes from Members

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

Pros

"The system efficiently processes and calculates the data flow within the cluster using DLP functionality."
"The triggering scenarios and routing scenarios are all good, making it a very useful solution for financial institutions."
"I am happy with the product, other than pricing I don't have any other improvements that I can suggest."
"The stability has been good."
"I'm an administrator, and what I like most is the interface, the security, and the storage."
"From my pursuit of the secret sauce, I found that Solace really is, for us, the service and the partnership that we have with the company, having the level of expertise and the subject matter knowledge available to us is second to none."
"One of the main reasons for using PubSub+ is that it is a proper event manager that can handle events in a reactive way."
"I rate the PubSub+ Platform a 9 out of 10."
"It is a product that is more like a switch or router, where you install it, then it keeps on working."
"The way we can replicate information and send it to several subscribers is most valuable. It can be used for any kind of business where you've got multiple users who need information. Any company, such as LinkedIn, with a huge number of subscribers and any business, such as publishing, supermarket, airline, or shipping can use it."
"When we went to add another installation in our private cloud, it was easy. We received support from Solace and the install was seamless with no issues."
"The valuable feature of PubSub+ Event Broker is the speed of processing, publishing, and consumption."
"Guaranteed Messaging allows for us to transport messages between on-prem and the cloud without any loss of data."
 

Cons

"The product's interface needs improvement."
"It would be helpful if they could help us explain why they, as in, the customers, should use the product and the overall benefits."
"In the next release, I would like to see the GUI allow you to configure the security section."
"The pricing needs to be improved."
"The section on observability pertains to understanding the functioning of an event crash. Instead of focusing on how the crash occurs, attention is given to the observable aspects, such as a memory pipeline where one person pushes messages and another reads them. However, this pipeline often encounters issues, such as the reader being unavailable, causing the system to become stuck and preventing the messages from moving forward. This can lead to the pipeline being permanently stalled."
"Make it open source :-) with limited features so that this is not a barrier for using the technology in some places where they will only use open source technology despite then just paying for support (and paid features) on any used open source technology in the organization, as its a misnomer in my view the amount of large companies claiming to only use open source but then using products that are paid versions with additional features included."
"I heard that it is quite expensive compared to Kafka."
"The ease of management could be approved. The GUI is very good, but to configure and manage these devices programmatically in the software version is not easy. For example, if I would like to spin up a new software broker, then I could in theory use the API, but it would require a considerable amount of development effort to do so. There should be a tool, or something that Solace supports, that we could use for this, e.g., a platform like Terraform where we could use infrastructure as code to configure our source appliances."
"Some of the feature's gaps with some of the open-source vendors have been closed in a lot of ways. Being more agile and addressing those earlier could be an area for improvement."
"The integrations could improve in PubSub+ Event Broker."
"If you create one event in the past, you cannot resend it."
"For improvements, I would suggest increasing the max payload size to a limit of 100MB or more. The current max payload size is limited to 5MB."
 

Pricing and Cost Advice

"The platform is averagely priced."
"The pricing needs to be improved."
"We have been really happy with the product licensing rates. It has been free for us, up to a 100,000 transactions per second, and all we have to do is pay for support. Making their product available and accessible to us has not been a problem at all."
"We are looking for something that will add value and fit for purpose. Freeware is good if you want to try something quickly without putting in much money. However, as far as our decision is concerned, I don't think it helps. At the end of the day, if we are convinced that a capability is required, we will ask for the funding. Then, when the funding is available, we will go for an enterprise solution only."
"The pricing and licensing were very transparent and well-communicated by our account manager."
"The price of the solution is expensive."
"It could be cheaper. Its licensing is on a yearly basis."
"The licensing is dependent on the volume that is flowing. If you go for their support services, it will cost some more money, but I think it is worth it, especially if you are just starting your journey."
"Having a free version of the solution was a big, important part of our decision to go with it. This was the big driver for us to evaluate Solace. We started using it as the free version. When we felt comfortable with the free version, that is when we bought the enterprise version."
"I would rate the product's pricing a ten out of ten."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
13%
Manufacturing Company
11%
Outsourcing Company
10%
Construction Company
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business6
Midsize Enterprise1
Large Enterprise15
 

Questions from the Community

Ask a question
Earn 20 points
What is your experience regarding pricing and costs for PubSub+ Event Broker?
The pricing and setup cost of PubSub+ Platform is very seamless and reliable for medium and large-scale enterprises. For small-sized enterprises, it may be a higher cost, or they may be looking for...
What needs improvement with PubSub+ Event Broker?
PubSub+ Platform could improve by simplifying some advanced configurations and providing better visualization for event flow. Some advanced configurations in PubSub+ Platform could be made simpler ...
What is your primary use case for PubSub+ Event Broker?
PubSub+ Platform's main use case in our company is real-time data streaming using applications and API integrations. We are working on an IoT-based application, and our company handles most of the ...
 

Also Known As

No data available
PubSub+ Event Broker, PubSub+ Event Portal
 

Overview

 

Sample Customers

American Airlines, UBank, Bitly, Eurobits, Active International, Bison, Contextor, Constance Hotels, Resorts & Golf, Creval, Deloitte, ExxonMobil, FaceMe, FacePhi, Fitzsoft, Fuga Technologies, Guardio, Honeywell, Japanese airline, Jenzabar, KONE
FxPro, TP ICAP, Barclays, Airtel, American Express, Cobalt, Legal & General, LSE Group, Akuna Capital, Azure Information Technology, Brand.net, Canadian Securities Exchange, Core Transport Technologies, Crédit Agricole, Fluent Trade Technologies, Harris Corporation, Korea Exchange, Live E!, Mercuria Energy, Myspace, NYSE Technologies, Pico, RBC Capital Markets, Standard Chartered Bank, Unibet 
Find out what your peers are saying about IBM Event Streams vs. PubSub+ Platform and other solutions. Updated: November 2026.
920,769 professionals have used our research since 2012.