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SmartBear TestComplete vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on May 21, 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

k6 Open Source
Ranking in Regression Testing Tools
22nd
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Load Testing Tools (10th)
SmartBear TestComplete
Ranking in Regression Testing Tools
5th
Average Rating
7.6
Reviews Sentiment
6.8
Number of Reviews
76
Ranking in other categories
Functional Testing Tools (8th), Test Automation Tools (6th)
 

Mindshare comparison

As of August 2026, in the Regression Testing Tools category, the mindshare of k6 Open Source is 1.2%, up from 0.7% compared to the previous year. The mindshare of SmartBear TestComplete is 9.2%, down from 9.5% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Regression Testing Tools Mindshare Distribution
ProductMindshare (%)
SmartBear TestComplete9.2%
k6 Open Source1.2%
Other89.6%
Regression Testing Tools
 

Featured Reviews

NalinGoonawardana - PeerSpot reviewer
Principal Consultant ( Test automation - Performance testing) at TTC Global (TTC) at TTC at a tech services company with 51-200 employees
Offers good scalability and has the ability to integrate with various systems and services
One area where k6 could improve is by introducing a GUI similar to JMeter. While k6 is a powerful tool for performance testing, it leans heavily towards coding. Having a GUI, even if it is a low-code approach, could make it more accessible to a broader audience. It would be beneficial to strike a balance where basic tasks can be performed graphically through a user-friendly interface, while still allowing the flexibility for more complex operations through code, similar to how JMeter operates. This could enhance the user experience and make k6 more approachable for those who may not be as comfortable with scripting.
Prakhar Goel - PeerSpot reviewer
Sr Test Lead at Emerson
Used for integration automation, user-based automation, and web automation
The solution's most valuable features are the drag-and-drop feature, keyword-driven approach, and reusability of the scripts. The solution has introduced a new feature that helps us identify objects we cannot normally identify. It gives you a fair idea of objects, resolving the object recognition issue. The solution can be used to perform different tests on different machines.

Quotes from Members

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

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."
"The integration with various tools is important."
"I changed because I did not have any solutions as close to the real thing as this."
"Price-wise, feature-wise, its ability to integrate with other products, and of course, scalability-wise, it's great."
"We use TestComplete to do the automation test on our product’s web UI; in total, over 500 test cases are written and the automation coverage is over 80%, which helps to reduce manual effort dramatically, and by using the same script, we can run the test on both IE and Google Chrome."
"It is very easy to maintain tests with this tool. It covers all necessary items in the test plan. The most painful item in testing is maintenance. When changes occur, the tests should be maintained."
"It works very fine. It is fast on almost any machine, and it is also very well organized. I like its object mapping and its capability to find and interact with almost everything that exists on Windows."
"The product is stable for what we are currently using it for, and it is sufficient for us."
"TestComplete is much more flexible, light, and easy to use."
 

Cons

"One area where k6 could improve is by introducing a GUI similar to JMeter."
"Name Mapping feature should be clearer. Whenever I use it, I do not really know what will work and what will not work."
"The solution’s customer support should be improved."
"The learning curve of the solution's user interface is a little high for new users."
"More APIs could be added."
"The solution doesn't have a very flexible pricing model."
"TestComplete gives support to do requests to a SOAP web service but has no support to do HTTP requests on Restful services."
"Technical support can be improved by being more efficient in responding to questions."
"From my understanding, the product has changed significantly since v5 was released. I don’t know that it has necessarily improved, for my needs."
 

Pricing and Cost Advice

Information not available
"The option we chose was around $2,000 USD."
"SmartBear TestComplete is an expensive tool."
"The pricing is a little above average — it could be lower."
"The solution's pricing is too high."
"It comes with a high cost."
"The price is less, compared to other products, such as QTP."
"Buy modules on demand. If you have a four-person team and they will each automate tests only 25% of the time, it's better to buy a floating licence and share the tool during the work day."
"We have a TestComplete 12 license."
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Top Industries

By visitors reading reviews
Computer Software Company
13%
Financial Services Firm
12%
Construction Company
9%
Retailer
8%
Manufacturing Company
13%
Financial Services Firm
10%
Construction Company
10%
Outsourcing Company
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
By reviewers
Company SizeCount
Small Business23
Midsize Enterprise19
Large Enterprise32
 

Questions from the Community

Ask a question
Earn 20 points
What is your experience regarding pricing and costs for SmartBear TestComplete?
I am not involved in pricing or licensing; our management team handles these aspects.
What needs improvement with SmartBear TestComplete?
While using SmartBear TestComplete, we are fine with the current capabilities, however, it would be beneficial to improve some performance aspects, especially the image comparison feature. Occasion...
What is your primary use case for SmartBear TestComplete?
We are using SmartBear TestComplete ( /products/smartbear-testcomplete-reviews ) for automation over applications.
 

Also Known As

Load Impact
No data available
 

Overview

 

Sample Customers

rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
Cisco, J.P. Morgan, Boeing, McAfee, EMC, Intuit, and Thomson Reuters.
Find out what your peers are saying about SmartBear TestComplete vs. k6 Open Source and other solutions. Updated: August 2026.
909,725 professionals have used our research since 2012.