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IBM Event Streams vs PubSub+ Platform comparison

 

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
9th
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
8th
Average Rating
8.6
Reviews Sentiment
7.1
Number of Reviews
17
Ranking in other categories
Message Oriented Middleware (MOM) (2nd), Event Monitoring (12th), Streaming Analytics (13th)
 

Mindshare comparison

As of October 2025, in the Message Queue (MQ) Software category, the mindshare of IBM Event Streams is 1.1%, up from 0.9% compared to the previous year. The mindshare of PubSub+ Platform is 4.2%, down from 5.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Message Queue (MQ) Software Market Share Distribution
ProductMarket Share (%)
PubSub+ Platform4.2%
IBM Event Streams1.1%
Other94.7%
Message Queue (MQ) Software
 

Featured Reviews

Ismail El-Dahshan - PeerSpot reviewer
Easy to set up with good support and good routing scenarios
The triggering and the events that they have triggered as well as the route of the message according to the events are very useful. The triggering scenarios and routing scenarios are all good. It's a very useful solution for financial institutions. The initial setup is pretty straightforward. The stability has been good. I've found the product to be scalable. Technical support is responsive.
BhanuChidigam - PeerSpot reviewer
Performs well, high availability, and helpful support
We use approximately four people for the maintenance of the solution. My advice to others is this solution has high throughput and is used for many stock exchanges. For business critical use cases, such as processing financial transactions at a quick speed, I would recommend this solution. I rate PubSub+ Event Broker an eight out of ten.

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 stability has been good."
"I'm an administrator, and what I like most is the interface, the security, and the storage."
"I rate the PubSub+ Platform a 9 out of 10."
"The event portal and the diversity of deployment options in a hybrid landscape are the most valuable features."
"We like the seamless flexibility in protocol exchange offering without writing a code."
"The topic hierarchy is pretty flexible. Once you have the subject defined just about anybody who knows Java can come onboard. The APIs are all there."
"The most valuable feature of PubSub+ Event Broker is the scaling integration. Prior to using the solution, it was done manually with a file, and it can be done instantly live."
"Going from something where we had outages and capacity issues constantly to a system that was able to scale with the massive market data and messaging spikes that happened during the initial stages of the COVID crisis in March, we were able to scale with 40 plus percent growth in our platform over the course of days."
"Guaranteed Messaging allows for us to transport messages between on-prem and the cloud without any loss of data."
"As of now, the most valuable aspects are the topic-based subscription and the fanout exchange that we are using."
 

Cons

"It would be helpful if they could help us explain why they, as in, the customers, should use the product and the overall benefits."
"The product's interface needs improvement."
"In the next release, I would like to see the GUI allow you to configure the security section."
"If you create one event in the past, you cannot resend it."
"It could be cheaper. It could also have easier usage. It is a brilliant product, but it is quite complex to use."
"We've pointed out some things with the DMR piece, the event mesh, in edge cases where we could see a problem. Something like 99 percent of users wouldn't ever see this problem, but it has to do with if you get multiple bad clients sending data over a WAN, for example. That could then impact other clients."
"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."
"One of the areas of improvement would be if we could tell the story a bit better about what an event mesh does or why an event mesh is foundational to a large enterprise that has a wide diversity of applications that are homegrown and a small number off the shelf."
"The solution could be improved by enhancing the message pooling size for persistent messages to handle both small and large messages effectively."
"We have requested to be able to get into the payload to do dynamic topic hierarchy building. A current workaround is using the message's header, where the business data can be put into this header and be used for a dynamic topic lookup. I want to see this in action when there are a couple of hundred cases live. E.g., how does it perform? From an administration perspective, is the ease of use there?"
"The licensing and the cost are the major pitfalls."
 

Pricing and Cost Advice

"The pricing needs to be improved."
"The platform is averagely priced."
"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."
"I would rate the product's pricing a ten out of ten."
"Having a free version is critical for our technology operations use case. This is primarily because our technology operations team is a cost center in our company. They are not profit drivers and having a free version for installation will probably meet our needs. Even for production, it'll support up to a 100,000 messages per second. I don't think in technology operations that we have that many events and alerts from our detection tools. Even if I have 20 or 30 event detection products out there, they're only going to publish the things which are critical or warnings. I don't think we'll ever reach a 100,000 messages per second."
"The price of the solution is expensive."
"The price of PubSub+ Event Broker is reasonable for the capability it offers. However, when compared to others solutions on the market it is expensive."
"It could be cheaper. Its licensing is on a yearly basis."
"There are different tiers where you can choose what would work for you. As a customer, you need to know roughly how many messages a month you will use."
"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."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
31%
Manufacturing Company
11%
Retailer
10%
Computer Software Company
6%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business3
Midsize Enterprise1
Large Enterprise12
 

Questions from the Community

What do you like most about IBM Event Streams?
The system efficiently processes and calculates the data flow within the cluster using DLP functionality.
What is your experience regarding pricing and costs for IBM Event Streams?
The platform is averagely priced. I rate the pricing a six out of ten.
What needs improvement with IBM Event Streams?
The product's interface needs improvement. Additionally, there could be a management console to create and manage clusters.
What needs improvement with PubSub+ Event Broker?
Regarding improving the PubSub+ Platform, I'm not sure about the pricing aspect, but I heard that it is quite expensive compared to Kafka. That's the only concern I can mention; otherwise, it was a...
What is your primary use case for PubSub+ Event Broker?
My typical use case for the PubSub+ Platform is as an event-driven solution for communication between two components.
What advice do you have for others considering PubSub+ Event Broker?
I have experience working with Kafka, PubSub+ Platform, and IBM MQ, all three of them. We are customers, meaning my company uses Solace. We use it and customize it based on our needs. Based on my e...
 

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: September 2025.
869,566 professionals have used our research since 2012.