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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 October 2025, in the Load Testing Tools category, the mindshare of BlazeMeter is 9.8%, down from 16.2% compared to the previous year. The mindshare of k6 Open Source is 4.1%, up from 2.5% compared to the previous year. The mindshare of RadView WebLOAD is 2.3%, up from 1.6% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Load Testing Tools Market Share Distribution
ProductMarket Share (%)
BlazeMeter9.8%
k6 Open Source4.1%
RadView WebLOAD2.3%
Other83.8%
Load Testing Tools
 

Featured Reviews

Manoj Raghavendra - PeerSpot reviewer
Provides global load simulations without managing infrastructure and offers built-in reporting features
BlazeMeter should improve or make available some features out of the box that JMeter requires customization for. The licensing cost is also a concern since BlazeMeter is not free like JMeter, which limits its use. Additionally, if there is no host in preferred locations such as some Asian or Middle Eastern countries, it might not be convenient to use BlazeMeter.
NalinGoonawardana - PeerSpot reviewer
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.
Vadim Urintsov - PeerSpot reviewer
An excellent solution for graph testing on programming software
Our primary use case for the solution is for graph testing on programming software The information provided via the solution and the dashboard is valuable. Additionally, it's interesting as you can view inside information integrated and see the WebLOAD with APM. There is no analytical dashboard…

Quotes from Members

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

Pros

"The extensibility that the tool offers across environments and teams is valuable."
"The user interface is good."
"BlazeMeter can be used for both API and performance testing, it is a multi-facility tool."
"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."
"BlazeMeter's most valuable feature is its cloud-based platform for performance testing."
"The feature that stands out the most is their action groups. They act like functions or methods and code, allowing us to reuse portions of our tests. That also means we have a single point for maintenance when updates are required. Instead of updating a hundred different test cases, we update one action group, and the test cases using that action group will update."
"The most valuable feature of the solution is its ability to run high loads and generate reports."
"It has helped us simulate heavy load situations so we can fix performance issues ahead of time."
"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 most valuable aspect is that the IDE is simple and it's quick to complete the process."
"The most valuable feature of this solution is reporting."
"The solution is simple and useful."
 

Cons

"BlazeMeter does not provide integration with the Aternity tool."
"The Timeline Report panel has no customization options. One feature that I missed was not having a time filter, which I had in ELK. For example, there are only filter requests for a time of less than 5 seconds."
"The scanning capability needs improvement."
"For a new user of BlazeMeter, it might be difficult to understand it from a programming perspective."
"We encountered some minor bugs, and I would like to have the ability to add load generators to workspaces without having to use APIs. We can't do that now, so we're beholden to the APIs."
"The product could improve in areas such as mobile testing and the integration of AI analytics."
"The reporting capabilities could be improved."
"Having more options for customization would be helpful."
"One area where k6 could improve is by introducing a GUI similar to JMeter."
"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."
"There is no analytical dashboard."
"Technical support is slow and wastes a lot of time, so it needs to be improved."
 

Pricing and Cost Advice

"The pricing is manageable. It is not that big. Big companies won't mind the licensing costs."
"I would rate the pricing a three out of ten, where one is very cheap, and ten is very expensive."
"When compared with the cost of the licenses of other tools, BlazeMeter's license price is good."
"The product isn't cheap, but it isn't the most expensive on the market. During our proof of concept, we discovered that you get what you pay for; we found a cheaper solution we tested to be full of bugs. Therefore, we are willing to pay the higher price tag for the quality BlazeMeter offers."
"The overall product is less costly than our past solutions, so we've absolutely saved money."
"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."
"We pay a yearly licensing fee for the solution."
"It is an averagely priced product."
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
19%
Computer Software Company
15%
Manufacturing Company
8%
Retailer
8%
Computer Software Company
18%
Manufacturing Company
9%
Retailer
8%
Financial Services Firm
8%
Government
14%
Computer Software Company
13%
Performing Arts
10%
Healthcare Company
10%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
By reviewers
Company SizeCount
Small Business18
Midsize Enterprise9
Large Enterprise22
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?
BlazeMeter's pricing depends on the type of account used. They offer multiple account types, with cost variations bas...
What do you like most about k6 Open Source?
The standout feature of k6 is its strong focus on API performance testing.
What needs improvement with k6 Open Source?
One area where k6 could improve is by introducing a GUI similar to JMeter. While k6 is a powerful tool for performanc...
What is your primary use case for k6 Open Source?
k6 Open Source is a powerful tool, especially for API-level performance testing. Its integration capabilities and eas...
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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.
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