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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
10th
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
18
Ranking in other categories
Message Oriented Middleware (MOM) (2nd), Event Monitoring (11th), Streaming Analytics (14th)
 

Mindshare comparison

As of March 2026, in the Message Queue (MQ) Software category, the mindshare of IBM Event Streams is 2.2%, up from 0.9% compared to the previous year. The mindshare of PubSub+ Platform is 4.4%, down from 5.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Message Queue (MQ) Software Mindshare Distribution
ProductMindshare (%)
PubSub+ Platform4.4%
IBM Event Streams2.2%
Other93.4%
Message Queue (MQ) Software
 

Featured Reviews

Ismail El-Dahshan - PeerSpot reviewer
CEO at areebah
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.
reviewer2714190 - PeerSpot reviewer
freelancer at a financial services firm with 1,001-5,000 employees
Offers a seamless way to decouple applications, providing impressive performance and flexibility
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 as impressive as Kafka, better than Kafka based on my experience working on the Solace and Kafka white paper.

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."
"I am happy with the product, other than pricing I don't have any other improvements that I can suggest."
"The triggering scenarios and routing scenarios are all good, making it a very useful solution for financial institutions."
"I'm an administrator, and what I like most is the interface, the security, and the storage."
"The stability has been good."
"Guaranteed Messaging allows for us to transport messages between on-prem and the cloud without any loss of data."
"Solace has been incident free in HA deployment for seven years."
"The way we can replicate information and send it to several subscribers is most valuable."
"As of now, the most valuable aspects are the topic-based subscription and the fanout exchange that we are using."
"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."
"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."
"The most useful features has been the WAN optimization and probably the HybridEdge, which requires some third-party adapters or plugins. The idea that we can position Solace as a protocol-agnostic message transport fabric is key to our company having all manners of asynchronous messaging protocols from MQ, Kafka, JMS, etc. I really like the WAN optimization: Send once over a WAN, then distribute locally as many times as there are subscribers."
"The best features of PubSub+ Platform include being highly scalable, allowing us to handle billions and billions of events, and configuring and managing PubSub+ Platform is straightforward and simple while being highly reliable."
 

Cons

"In the next release, I would like to see the GUI allow you to configure the security section."
"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."
"The pricing needs to be improved."
"It would be helpful if they could help us explain why they, as in, the customers, should use the product and the overall benefits."
"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."
"If you create one event in the past, you cannot resend it."
"A challenge we currently have is Solace's ability to integrate with single sign-on in our Active Directory and other single sign-on tools and platforms that any company would have. It's important for the platforms to work. Typically, they support only LDAP-based connectivity to our SQL Servers."
"The solution could be improved by enhancing the message pooling size for persistent messages to handle both small and large messages effectively."
"Some improvement is required with Solace professional services. The professional services really needs to drive the solutions for the customers and share best practices."
"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."
"I would like them to design topic and queue schemas, mapping them to the enterprise data structure."
 

Pricing and Cost Advice

"The pricing needs to be improved."
"The platform is averagely priced."
"I would rate the product's pricing a ten out of ten."
"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 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."
"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."
"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 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."
"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."
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Top Industries

By visitors reading reviews
No data available
Financial Services Firm
23%
Manufacturing Company
11%
Retailer
6%
Computer Software Company
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business4
Midsize Enterprise1
Large Enterprise14
 

Questions from the Community

Ask a question
Earn 20 points
What is your experience regarding pricing and costs for PubSub+ Event Broker?
I do not know about the pricing of PubSub+ Platform because I did not manage the instance.
What needs improvement with PubSub+ Event Broker?
Additional in-line information about certain things on PubSub+ Platform could be more beneficial for new users who are just starting to use this technology. The analytics tools integrated within Pu...
What is your primary use case for PubSub+ Event Broker?
I describe the main use cases for PubSub+ Platform as wanting to use it as a messaging queue pipeline for managing the data stream events in our IoT platform while I was working at an IoT-based com...
 

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: March 2026.
885,311 professionals have used our research since 2012.