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k6 Open Source Reviews

Vendor: k6
3.8 out of 5
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What is k6 Open Source?

Load Impact offers three main features:

Get the Load Testing Tools Buyer's Guide and find out what your peers are saying about k6 Open Source, Apache JMeter, Tricentis NeoLoad and more!
k6 Open Source is the #7 ranked solution in top Load Testing Tools and #9 ranked solution in top Regression Testing Tools. PeerSpot users give k6 Open Source an average rating of 7.6 out of 10. k6 Open Source is most commonly compared to Apache JMeter: k6 Open Source vs Apache JMeter. k6 Open Source is popular among the large enterprise segment, accounting for 54% of users researching this solution on PeerSpot. The top industry researching this solution are professionals from a computer software company, accounting for 15% of all views.
Buyer's Guide
Load Testing Tools
January 2026
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Helped 879,889 peers since 2012

k6 Open Source mindshare

Product category:
Load Testing Tools
As of January 2026, the mindshare of k6 Open Source in the Load Testing Tools category stands at 4.5%, up from 3.1% compared to the previous year, according to calculations based on PeerSpot user engagement data.
Load Testing Tools Market Share Distribution
ProductMarket Share (%)
k6 Open Source4.5%
Apache JMeter12.2%
Tricentis NeoLoad11.3%
Other72.0%
Load Testing Tools
 
 
Key learnings from peers

Valuable Features

  • "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."

Room for Improvement

  • "One area where k6 could improve is by introducing a GUI similar to JMeter."
These insights are based on the in-depth reviews provided by peers to help you make a better buying decision.
Download our Load Testing Tools Buyer's Guide for additional reliable information.

Top industries

By visitors reading reviews
Computer Software Company
15%
Financial Services Firm
10%
Manufacturing Company
8%
Media Company
7%
Retailer
7%
Outsourcing Company
7%
Educational Organization
5%
Recreational Facilities/Services Company
5%
Healthcare Company
4%
University
4%
Government
4%
Construction Company
4%
Insurance Company
3%
Wholesaler/Distributor
2%
Real Estate/Law Firm
2%
Logistics Company
1%
Legal Firm
1%
Hospitality Company
1%
Comms Service Provider
1%
Venture Capital & Private Equity Firm
1%
Recruiting/Hr Firm
1%
Non Profit
1%
Energy/Utilities Company
1%
Transportation Company
1%
Consumer Goods Company
1%
Performing Arts
1%
Pharma/Biotech Company
1%

Compare k6 Open Source with alternative products

Go!

Learn more about k6 Open Source

  1. Automated testing - Integrates into your CD pipeline with CI plug-ins or opt for full control with API/SDKs.
  2. API testing - a powerful scripting environment where you can create as simple or complex API scenarios as you need.
  3. 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.

k6 Open Source was previously known as Load Impact.

k6 Open Source customers

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

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Product Categories

Product Categories
Load Testing Tools
Regression Testing Tools

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k6 Open Source Reviews Summary
Author infoRatingReview Summary
Performance Test Engineer at BETBY4.0k6 Open Source is a performance-test-oriented tool ideal for experienced engineers, offering simple syntax, efficiency, and native Grafana integration. It handles high transaction volumes smoothly, providing a significant advantage over other tools like JMeter.
Principal Consultant ( Test automation - Performance testing) at TTC Global (TTC) at TTC at a tech services company with 51-200 employees3.5I find k6 Open Source to be a powerful tool for API performance testing, ideal for early development integration. Its coding focus requires improvement through a GUI for broader accessibility, similar to JMeter, enhancing user experience for non-coders.