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CrossBrowserTesting vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive Summary

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
19
Ranking in other categories
Functional Testing Tools (27th)
k6 Open Source
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Load Testing Tools (7th), Regression Testing Tools (9th)
 

Featured Reviews

CN
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.…
ArtemCheremisin - PeerSpot reviewer
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.

Quotes from Members

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

Pros

"The technical support is good."
"This solution helps lower the overhead cost associated with buying multiple devices."
"Aside from speeding up our processes, it also allowed us to tie in our automated test scenarios and integrate our reporting tools to make the entire process efficient and hassle free."
"I must acknowledge that the customer support has been A++ when I have run into problems."
"It was the perfect solution that saved us time and money to perform web viewing tests on real devices, which allowed our team to correct multiple failures in devices."
"The most valuable feature is that it gives us real OS devices that are available to test, and we don't have to ensure that all of the devices are up to date."
"CrossBrowserTesting allows us to test our site with real-world devices in real-world scenarios and find what we're missing."
"The support team is top-notch. I have a great relationship with them. They are extremely honest and responsive."
"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."
"I have had quite a few issues trying to use a virtual machine to test our application on."
"Sometimes, some of their instances fail, particularly in older versions of browsers."
"We had some issues with the onboarding process and the cloud conductivity could improve."
"I have experienced some lagging issues, and it does not seem like all of the testing environments are configured the same."
"The five minute timeouts can cause irritation if you have just popped away to consult some supporting documentation."
"The speed connection in mobile devices could be improved, because sometimes the load time is uncertain."
"The screenshot tool defaults to a screen layout instead of a full page test. I find it a bit cumbersome that I can't have it run a full screenshot as my default."
"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."
"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."
"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."
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Top Industries

By visitors reading reviews
Comms Service Provider
10%
Computer Software Company
10%
Construction Company
9%
Transportation Company
7%
Computer Software Company
14%
Financial Services Firm
11%
Construction Company
8%
Retailer
8%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business9
Midsize Enterprise5
Large Enterprise10
No data available
 

Questions from the Community

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Also Known As

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Load Impact
 

Overview

 

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
Find out what your peers are saying about CrossBrowserTesting vs. k6 Open Source and other solutions. Updated: April 2026.
894,738 professionals have used our research since 2012.