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Cavisson NetStorm vs k6 Open Source comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 6, 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

Cavisson NetStorm
Ranking in Load Testing Tools
20th
Average Rating
9.4
Reviews Sentiment
8.3
Number of Reviews
3
Ranking in other categories
No ranking in other categories
k6 Open Source
Ranking in Load Testing Tools
7th
Average Rating
7.6
Reviews Sentiment
7.9
Number of Reviews
2
Ranking in other categories
Regression Testing Tools (9th)
 

Mindshare comparison

As of January 2026, in the Load Testing Tools category, the mindshare of Cavisson NetStorm is 1.3%, up from 0.4% compared to the previous year. The mindshare of k6 Open Source is 4.5%, up from 3.1% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools Market Share Distribution
ProductMarket Share (%)
k6 Open Source4.5%
Cavisson NetStorm1.3%
Other94.2%
Load Testing Tools
 

Featured Reviews

reviewer1329360 - PeerSpot reviewer
Performance Architect at Kohl's
Has monitoring capabilities integrated into it to see the performance of components while the test is in the running phase
NetStorm can generate high load with a single machine. Its Runlogic feature is very useful to send load to cover each and every flow of the application. NetStorm gives the feasibility of generating load with multiple load arrival models helping components to be tested based on its usage. NetStorm has monitoring capabilities integrated into it to see the performance of components while the test is in the running phase. One more great functionality is the ability to control the load runtime by increasing or decreasing the virtual users or pausing the users to keep on repeating the transactions without exiting.
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

"This tool helps to focus on real-time transactions that occur at a very high rate."
"Designs dynamic scripts and scenarios, as per our requirements, which is one the most important feature available in NetStorm. It helps us to do performance testing of our application in a periodic way."
"NetStorm can generate high load with a single machine. Its Runlogic feature is very useful to send load to cover each and every flow of the application. NetStorm gives the feasibility of generating load with multiple load arrival models helping components to be tested based on its usage."
"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

"In the next release, we are looking for a JS instrumentation feature that would be helpful in identifying client-side issues at an early stage, or during testing."
"The user interface had to be improved for the product. Its user interface should be made simple and easy to customize as per user needs."
"Need to add or support some more APIs in the Script Manager window."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
 

Pricing and Cost Advice

"NetStorm is priced well when compared to many well-known tools."
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Top Industries

By visitors reading reviews
No data available
Computer Software Company
16%
Financial Services Firm
10%
Manufacturing Company
8%
Media Company
7%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Midsize Enterprise5
Large Enterprise15
No data available
 

Questions from the Community

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Also Known As

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Load Impact
 

Overview

 

Sample Customers

Oracle, Macy's, Redbox, art.com, Pronto Networks, A10 Networks, Renesas, San Jose Medical Group
rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
Find out what your peers are saying about Cavisson NetStorm vs. k6 Open Source and other solutions. Updated: December 2025.
879,371 professionals have used our research since 2012.