Azul Zulu vs Calabrio ONE comparison

Azul Systems and Calabrio are both solutions in the AI Customer Experience Personalization category. Azul Systems is ranked #15 with an average rating of 9.0, while Calabrio is ranked #8. Azul Systems holds a 1.1% mindshare in ACEP, compared to Calabrio’s 1.8% mindshare. Additionally, 100% of Azul Systems users are willing to recommend the solution, compared to 81% of Calabrio users who would recommend it.

Azul Zulu

Read 2 Azul Zulu reviews

781 Views
312 Comparison Views

100% willing to recommend

Calabrio ONE

Read 32 Calabrio ONE reviews

1,121 Views
381 Comparison Views

81% willing to recommend

Azul Zulu

Calabrio ONE

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between Azul Zulu and Calabrio ONE based on real PeerSpot user reviews.

Find out in this report how the two AI Customer Experience Personalization solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed Azul Zulu vs. Calabrio ONE Report (Updated: March 2026).

Buyer's Guide

Azul Zulu vs. Calabrio ONE

March 2026

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Helped 885,311 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

Azul Zulu

Ranking in AI Customer Experience Personalization

15th

Average Rating

8.6

Reviews Sentiment

7.7

Number of Reviews

Ranking in other categories

Application Infrastructure (7th), AI Content Creation (9th)

Calabrio ONE

Ranking in AI Customer Experience Personalization

8th

Average Rating

7.8

Reviews Sentiment

7.5

Number of Reviews

Ranking in other categories

Workforce Engagement Management (4th), AI Scheduling & Coordination (15th)

Mindshare comparison

As of March 2026, in the AI Customer Experience Personalization category, the mindshare of Azul Zulu is 1.1%, down from 27.2% compared to the previous year. The mindshare of Calabrio ONE is 1.8%, down from 2.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.

AI Customer Experience Personalization Mindshare Distribution
Product	Mindshare (%)
Calabrio ONE	1.8%
Azul Zulu	1.1%
Other	97.1%

AI Customer Experience Personalization

Featured Reviews

BasilJiji

System Engineer at a retailer with 10,001+ employees

Standardized our Java estate and have reduced licensing costs while maintaining strong support

Azul Zulu's ability to allow us to standardize our Java estate on a single and well-supported platform stands out as one of its best features. This standardization simplifies our compliance audits and ensures all our applications receive timely security updates.Azul Zulu positively impacts our organization by providing a platform that allows us to standardize Java on a well-supported platform. Without the high cost associated with other proprietary vendors, Azul Zulu provides an excellent platform for running our applications.

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Gaye Stone

Customer Service Analyst/Scheduler at Tucson Electric Power

The Copy Schedule Activities reduces time spent for changing activities. Agents are not able to cancel an approved request in the Time Off Request area.

I cannot speak about the difference for the QM software. My main use is of the WFM software. A few of the features were "nice to have" features, but version 9.3 had some "deficiencies". The main problem was not being able to run scenarios in a pseudo scheduling area, so the way Calabrio is now, agents can possibly see test scenarios. Another problem is the Time Off Request area. Agents are not able to cancel an approved request through this area. The sorting/filtering could be improved upon greatly. We are scheduled to upgrade to version 10.0, which will resolve many of the issues we do not like about the current version that we are using. Update: We are still on version 9.3 and looking forward to upgrading.

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Quotes from Members

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

Pros

"We've had no issues with stability."

"We achieved specific outcomes from using Azul Zulu by reducing our Java licensing and support costs by approximately 70% when compared to our previous Oracle contract."

"The feature which is the most valuable at this time is the support from all aspects of Calabrio, starting from the Sales team, to the implementation team, to the trainers, as they are all willing to support us through the entire process."

"We have been able to use call recordings for training as well as perform staff performance evaluations."

"Our agents have the functionality for partial coverage, this allows them to customize their schedule and still meet our SLA's."

"The Copy Schedule Activities has been a favorite tool. It reduces time spent when I need to make changes which are identical to multiple agents' schedules."

"Customer Service: Calabrio takes care of their customers very well; they really want to make sure you are extremely satisfied with your experience using the products."

"The customer service has been excellent, and we have received excellent remote and on site support."

"I was able to use Calabrio to provide data and analytics in a visually stimulating fashion which captured my audience's understanding with ease."

"The Analytics software has been fantastic for the contact center."

More Calabrio ONE pros

Cons

"Improvements for Azul Zulu could include more automated tools for unused code visibility integrated directly into the standard portal to help further optimize our cloud footprints."

"It needs a better update daemon. At this time the process is manual and could be an issue on multiple desktop deployments."

"We would like to see the backend SQL server improved for High Availability."

"Need a column for hours scheduled on main page."

"The biggest issue that we have come across is the messaging where we receive Time Off Requests."

"15 minute intervals across the solution would be of great value."

"Give agents the ability to cancel approved requests for time off. Vacation plans do actually change in the real world."

"It sometimes needs quite clunky work arounds for certain things, e.g. If I add exceptions into agent schedules such as holidays or long term sickness, it's not easy to just delete them."

"Reporting and email notifications to agent when they have received evaluations of their call recordings."

"The only issue I have found with Calabrio is the WFM side."

More Calabrio ONE cons

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Top Industries

By visitors reading reviews

Financial Services Firm

30%

Retailer

14%

Computer Software Company

11%

Construction Company

Financial Services Firm

13%

Insurance Company

11%

Comms Service Provider

Energy/Utilities Company

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

No data available

By reviewers
Company Size	Count
Small Business	2
Midsize Enterprise	1
Large Enterprise	29

Questions from the Community

What needs improvement with Azul Zulu?

Improvements for Azul Zulu could include more automated tools for unused code visibility integrated directly into the standard portal to help further optimize our cloud footprints. The other core J...

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What is your primary use case for Azul Zulu?

Azul Zulu serves as our primary Java runtime, providing a stable, 100% open-source, and certified solution for our production microservices. We utilize it to ensure cross-platform compatibility acr...

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What advice do you have for others considering Azul Zulu?

My advice for others looking into using Azul Zulu is to perform a pilot migration with one non-critical application first. You will likely find that it is truly a drop-in replacement, which will gi...

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Product Reports

Buyer's Guide

Application Infrastructure

March 2026

Download Azul Zulu product report

Buyer's Guide

Workforce Engagement Management

March 2026

Download Calabrio ONE product report

Also Known As

No data available

Calabrio

Overview

Zulu is a 100% open source certified build of OpenJDK, running on Linux, Windows, and OS X. Zulu complies with the Java SE standard for Java SE 8, 7, and 6. Free to download and use, Zulu is available on Azure, AWS, Canonical’s Charm Store and the Docker hub. Zulu Enterprise subscriptions deliver 24 x 7 x 365 access to Azul’s Support team.

Azul Systems

Calabrio is a customer engagement software company that provides analytic insights to catalyze growth through customer service contact centers. The Calabrio ONE software suite empowers everyone in an organization, from contact center agents to the CEO, with easy-to-use tools that provide a better understanding of the customer.

Every customer interaction yields insights that expand customer-consciousness, which is how leading companies now drive growth and long-term corporate prosperity.

Calabrio solutions are built on an intuitive, web-based architecture that positions and accelerates the contact center as an epicenter for customer insight. A pioneer in its industry for more than two decades, Calabrio has been named “Leader” by Gartner in its Magic Quadrant for Customer Engagement Center Workforce Optimization (2015). The company is also a member of the Cisco Solution Partner Program and the Avaya DevConnect program.

Calabrio

Sample Customers

Microsoft, Kyocera, OKI, Alcatel-Lucent Enterprise, Voya Financial

Polaris, Equifax, Fedex, Rabo, Paychex, Virteva, VITAS Healthcare Corp, Keurig Green Mountain, AT&T, Esurance, Subaru, Boeing, Tiffany & Co., Thomson Reuters.

Buyer's Guide

Azul Zulu vs. Calabrio ONE

March 2026

Free Report: Azul Zulu vs. Calabrio ONE

Find out what your peers are saying about Azul Zulu vs. Calabrio ONE and other solutions. Updated: March 2026.

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We monitor all AI Customer Experience Personalization reviews to prevent fraudulent reviews and keep review quality high. We do not post reviews by company employees or direct competitors. We validate each review for authenticity via cross-reference with LinkedIn, and personal follow-up with the reviewer when necessary.