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BlazeMeter vs RadView WebLOAD 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:
 

Mindshare comparison

As of April 2026, in the Load Testing Tools category, the mindshare of BlazeMeter is 7.6%, down from 14.8% compared to the previous year. The mindshare of k6 Open Source is 4.4%, up from 3.3% compared to the previous year. The mindshare of RadView WebLOAD is 3.2%, up from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools Mindshare Distribution
ProductMindshare (%)
BlazeMeter7.6%
k6 Open Source4.4%
RadView WebLOAD3.2%
Other84.8%
Load Testing Tools
 

Featured Reviews

NP
Software Engineer at a tech vendor with 1,001-5,000 employees
Performance testing for peak retail events has become faster and delivers reliable user load insights
BlazeMeter offers numerous features, but the ones that stand out to me include its ease of use, predefined configurations for high-scale performance testing that can be executed quickly, AI-powered testing, scriptless testing, and accurate API testing with an auto-correction plugin to ensure the accuracy of the tests performed. While I cannot pinpoint a single favorite feature, I find myself using parallel execution frequently because this feature allows multiple tests to be run at once, greatly enhancing my workflow. BlazeMeter effectively handles dependency in microservice architecture, for example, linking one API to another to manage response flows, such as the login and registration APIs, which flows efficiently through BlazeMeter. BlazeMeter has positively impacted my organization by reducing the time required for testing due to its robust features that yield efficient results. Unlike JMeter, which has limitations on user simulations, BlazeMeter allows me to test any number of users, helping my e-commerce website manage unpredictable traffic loads effectively while delivering accurate results I can trust to improve my systems.
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.
it_user1265766 - PeerSpot reviewer
Test Team Lead at Medtronic, Inc.
IDE is simple and it's quick to complete the process but the reporting is complicated
You pay for the number of users that you're going to be utilizing. In order to scale up, you would have to pay for additional users, but for our use case, we're able to scale fairly easily. We have a license for 500, but we're using half of that for our initial workflow. For maintenance, as far as I'm aware, there's only one person really working on the maintenance of it and we only really have one user consistently using the software. He's a QA person. We don't have any plans to increase our usage. Even though we've had it for a while, we have a major push to start utilizing it more. I imagine we'll probably be using it and utilizing it across our QA team in the next year. We're in the process of determining whether we're going to keep it or not due to the fact that it is so expensive. That's why I've been researching alternatives for the RadView.

Quotes from Members

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

Pros

"The on-the-fly test data improved our testing productivity a lot. The new test data features changed how we test the applications because there are different things we can do. We can use mock data or real data. We can also build data based on different formats."
"I also evaluated JMeter and LoadRunner but I prefer BlazeMeter because of the speed and because it's easier to use."
"One thing that we are doing a lot with the solution, and it's very good, is orchestrating a lot of JMeter agents. This feature has helped us a lot because we can reuse other vendors' performance scripts that they have used with JMeter before."
"Using this product has improved the way our organization does testing."
"The extensibility that the tool offers across environments and teams is valuable."
"The baseline comparison in BlazeMeter is very easy, especially considering the different tests that users can easily compare."
"BlazeMeter has provided me with a vast cloud platform to run JMeter script files, eliminating the need for storage or load providers."
"The product's initial setup phase was simple."
"The standout feature of k6 is its strong focus on API performance testing."
"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 most valuable aspect is that the IDE is simple and it's quick to complete the process."
"The most valuable aspect is that the IDE is simple and it's quick to complete the process."
"The tool itself is very viable for us."
"They are the best of all of the vendors I deal with, hands down."
"The analytics pack is probably one of the most powerful tools that I've seen."
"Technical support has been excellent, responsive, and helpful in trying to work through issues and questions."
"The most valuable feature of this solution is reporting."
"The ability to conceptualize the experience for users is great, the price as the bang for your buck is good, the user interface is quite user friendly, and the graphics make it easy to follow and are easy to identify."
 

Cons

"Version controlling of the test cases and the information, the ability to compare the current version and the previous version within Runscope would be really nice. The history shows who made the changes, but it doesn't compare the changes."
"BlazeMeter should improve or make available some features out of the box that JMeter requires customization for."
"The performance could be better. When reviewing finished cases, it sometimes takes a while for BlazeMeter to load. That has improved recently, but it's still a problem with unusually large test cases. The same goes for editing test cases. When editing test cases, it starts to take a long time to open those action groups and stuff."
"The cost is a bit high for the Indian consumer."
"Lacks an option to include additional users during a test run."
"Sometimes, when we execute tests, the results calculated by BlazeMeter, specifically the response times for failed transactions, are incorrect."
"Reporting."
"My only complaint is about the technical support, where sometimes I found that they would not read into and understand the details of my question before answering it."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
"Technical support is slow and wastes a lot of time, so it needs to be improved."
"There is no analytical dashboard."
"I would like to be able to edit a scenario instead of re-recording a scenario."
"Well there’s one issue when I have five or six scripts-- you have to set up different percentages and the number of connections and users, no matter how I tweak it seems that when I have one of the load scripts in the mix set, a percentage of less than 8-10%, there’s a probability that it won’t run at all."
"They can improve in the reporting - the ability to generate custom reports."
"The reporting side of things is really complicated. It's difficult to get out exactly what you're looking for, there are almost too many options."
"We did have an issue with some of the script working incorrectly in our higher environments."
"It would be great, in addition to the load tool, it would be nice, if Radview offered a JavaScript based functional test tool as well."
 

Pricing and Cost Advice

"The solution is free and open source."
"It is an averagely priced product."
"I rate the product's price two on a scale of one to ten, where one is very cheap, and ten is very expensive. The solution is not expensive."
"The licensing fees are billed on a monthly basis and they cost approximately $100 for the basic plan."
"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"We pay a yearly licensing fee for the solution."
"I would rate the pricing a three out of ten, where one is very cheap, and ten is very expensive."
"It's consumption-based pricing but with a ceiling. They're called CVUs, or consumption variable units. We can use API testing, GUI testing, and test data, but everything gets converted into CVUs, so we are free to use the platform in its entirety without getting bogged down by a license for certain testing areas. We know for sure how much we are going to spend."
Information not available
"It costs $8,600 yearly and we have the Cloud, which is an additional $800. Our perpetual license is $800 and then the Cloud functionality with our 500 users is the $8,600."
"We purchased a license for two years."
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Top Industries

By visitors reading reviews
Financial Services Firm
15%
Computer Software Company
10%
Comms Service Provider
7%
Retailer
6%
Computer Software Company
14%
Financial Services Firm
10%
Media Company
7%
Outsourcing Company
7%
Performing Arts
13%
Government
11%
Computer Software Company
11%
Comms Service Provider
9%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise23
No data available
By reviewers
Company SizeCount
Small Business2
Large Enterprise10
 

Questions from the Community

How does BlazeMeter compare with Apache JMeter?
Blazemeter is a continuous testing platform that provides scriptless test automation. It unifies functional and perfo...
What do you like most about BlazeMeter?
It has a unique programming dashboard that is very user-friendly.
What is your experience regarding pricing and costs for BlazeMeter?
Regarding pricing, it is favorable compared to other tools, providing good value. The licensing is flexible, with opt...
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Also Known As

JMeter Cloud
Load Impact
No data available
 

Overview

 

Sample Customers

DIRECTV, GAP, MIT, NBCUniversal, Pfizer, StubHub
rackspace, salesforce.com, IBM, servicenow, Nasdaq, JWT
GoDaddy, Praxair, DeVry University and the College Board.
Find out what your peers are saying about Apache, Tricentis, Perforce and others in Load Testing Tools. Updated: March 2026.
885,444 professionals have used our research since 2012.