CrossBrowserTesting vs k6 Open Source comparison

SmartBear and k6 are both solutions in the Regression Testing Tools category. Additionally, 100% of SmartBear users are willing to recommend the solution, compared to 100% of k6 users who would recommend it.

CrossBrowserTesting

Read 19 CrossBrowserTesting reviews

727 Views
625 Comparison Views

100% willing to recommend

k6 Open Source

Read 2 k6 Open Source reviews

914 Views
155 Comparison Views

100% willing to recommend

CrossBrowserTesting

k6 Open Source

Comparison Buyer's Guide

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Executive Summary

We performed a comparison between CrossBrowserTesting and k6 Open Source based on real PeerSpot user reviews.

Find out in this report how the two Regression Testing Tools solutions compare in terms of features, pricing, service and support, easy of deployment, and ROI.

To learn more, read our detailed CrossBrowserTesting vs. k6 Open Source Report (Updated: December 2025).

Buyer's Guide

CrossBrowserTesting vs. k6 Open Source

December 2025

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Helped 881,114 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

CrossBrowserTesting

Average Rating

9.0

Reviews Sentiment

7.6

Number of Reviews

Ranking in other categories

Functional Testing Tools (27th)

k6 Open Source

Average Rating

7.6

Reviews Sentiment

7.9

Number of Reviews

Ranking in other categories

Load Testing Tools (7th), Regression Testing Tools (9th)

Featured Reviews

CharlesNetshivhera

Senior DevOps Engineer at a financial services firm with 10,001+ employees

Knowledgeable support, scalable, and stable

We use CrossBrowserTesting for testing our web-based applications We had some issues with the onboarding process and the cloud conductivity could improve. I have used CrossBrowserTesting within the past 12 months. CrossBrowserTesting is stable. I have found CrossBrowserTesting to be scalable.…

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ArtemCheremisin

Performance Test Engineer at BETBY

Lighter on the RAM and has native Grafana support

The tool's big advantage is that it is more performance-test oriented for experienced testers who know what they are doing. In a normal working setup, performance engineers frequently work with DevOps and development teams. For these teams, k6 Open Source's syntax is much simpler and easier to understand and apply in the working process. Recently, I had a case where I was using another tool, and there wasn't enough memory for it because it required more RAM. k6 Open Source, on the other hand, is lighter and doesn't have a UI, which is beneficial. An engineer I was training could use k6 Open Source scripts even without my help. The tool is more efficient and has native support with Grafana, as both are developed by the same company. This integration enhances monitoring and loss ratio tracking. Thanks to its intelligent GUI, k6 Open Source's design is simpler, particularly for complex scenarios. When we need to manage hundreds of thousands or millions of transactions per minute, the solution becomes a game-changer compared to JMeter.

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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

"When I started to work on testing automation, I was very excited about how easy it is to run tests on different browsers. It was just a matter of configuration."

"CBT has made it easier to troubleshoot issues across devices when we do not have actual access to those specific devices. I even opt for CBT sometimes when we do have access to the device just because it is easier."

"When developing new pages that have questionable functionality or coding, we will often use CBT to test it in a browser. CBT works with our testing environment and development site."

"SmartBear has excellent, informative webinars, so keep an eye out for those."

"Selenium Grid allows testing multiple platforms to insure functionality for most users."

"The ability to choose from many devices is the best feature."

"I must acknowledge that the customer support has been A++ when I have run into problems."

"The CrossBrowserTesting Selenium API and live test features have greatly improved our team's ability to quickly and effectively perform QA."

More CrossBrowserTesting pros

"The tool's big advantage is that it is more performance-test oriented for experienced testers who know what they are doing. In a normal working setup, performance engineers frequently work with DevOps and development teams. For these teams, k6 Open Source's syntax is much simpler and easier to understand and apply in the working process."

"The standout feature of k6 is its strong focus on API performance testing."

Cons

"Sometimes the testing is slow."

"There should be more detailed training on CrossBrowserTesting."

"A wider range of physical devices with more browser versions in the Selenium Grid would be great to insure users with out-of-date devices are able to interact with our sites."

"The five minute timeouts can cause irritation if you have just popped away to consult some supporting documentation."

"I have had quite a few issues trying to use a virtual machine to test our application on."

"The speed connection in mobile devices could be improved, because sometimes the load time is uncertain."

"We had some issues with the onboarding process and the cloud conductivity could improve."

"It would be useful if we can run the live-testing test cases on multiple platforms at the same time, instead of waiting for one session to finish."

More CrossBrowserTesting cons

"One area where k6 could improve is by introducing a GUI similar to JMeter."

Pricing and Cost Advice

"CrossBrowserTesting offered the best value for its price."

"It is worth the pricing as the product is supported on multiple platforms and browsers."

"The lowest price point is very reasonable. It is also useful if only one person in the company needs to check on the browser display."

"SmartBear offers bundles of products that work together."

"A few intermediary pricing options for small QA teams would be nice, e.g., unlimited screenshots, "as you need it" parallel tests, etc."

Information not available

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Top Industries

By visitors reading reviews

Computer Software Company

17%

Performing Arts

Government

University

Computer Software Company

15%

Financial Services Firm

10%

Media Company

Retailer

Company Size

By reviewers

Large Enterprise

Midsize Enterprise

Small Business

By reviewers
Company Size	Count
Small Business	9
Midsize Enterprise	5
Large Enterprise	10

No data available

Questions from the Community

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What advice do you have for others considering k6 Open Source?

I rate the overall solution an eight out of ten.

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Comparisons

BrowserStack vs CrossBrowserTesting

Compared 31% of the time

Sauce Labs vs CrossBrowserTesting

Compared 11% of the time

OpenText Functional Testing vs CrossBrowserTesting

Compared 9% of the time

LambdaTest vs CrossBrowserTesting

Compared 8% of the time

Eggplant Test vs CrossBrowserTesting

Compared 7% of the time

More CrossBrowserTesting Competitors

BlazeMeter vs k6 Open Source

Compared 15% of the time

Tricentis NeoLoad vs k6 Open Source

Compared 14% of the time

Selenium HQ vs k6 Open Source

Compared 9% of the time

Apache JMeter vs k6 Open Source

Compared 9% of the time

OpenText Enterprise Performance Engineering (LoadRunner Enterprise) vs k6 Open Source

Compared 8% of the time

More k6 Open Source Competitors

Product Reports

Buyer's Guide

CrossBrowserTesting

January 2026

Download CrossBrowserTesting product report

Buyer's Guide

Load Testing Tools

January 2026

Download k6 Open Source product report

Also Known As

No data available

Load Impact

Overview

CrossBrowserTesting is a cloud testing platform that gives instant access to 1500+ different real desktop and mobile browsers for testers, developers, and designers.

Native debugging tools make manual testing easy to inspect and correct HTML, CSS, and JavaScript errors on any browser.
Take automated screenshots across multiple browsers at once, then compare side-by-side against historical test runs.

SmartBear

Load Impact offers three main features:

Automated testing - Integrates into your CD pipeline with CI plug-ins or opt for full control with API/SDKs.
API testing - a powerful scripting environment where you can create as simple or complex API scenarios as you need.
Web & web app testing - easily load test your website or web app. Record user scenarios using our Chrome extension or proxy recorder and configure a test with just a few clicks - no programming required.

Sample Customers

St. Jude Children's Research Hospital, Accenture, Sony, Los Angeles Times, ADP, Verizon, T-Mobile, Wistia

rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT

Buyer's Guide

CrossBrowserTesting vs. k6 Open Source

December 2025

Free Report: CrossBrowserTesting vs. k6 Open Source

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