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Best Load Testing Software in 2026

Use load testing software to check how an application or service performs under test conditions. This guide helps compare tools by price, source-code access and operating approach.

  1. 1

    Apache JMeter

    Free plan LinuxMacSelf-hosted+1

    Apache JMeter offers protocol-level load testing, reporting and extensibility at no cost. It is not a browser-rendering tool, and load tests should run in command-line mode.

    7.6 Free plan Visit site
  2. 2

    Artillery

    Free plan APILinuxMac+3

    Artillery brings load tests, Playwright-based testing, and production monitoring into one toolkit, with integrations for observability and CI tools.

    7.6 Free plan · paid from $199/mo Visit site
  3. 3

    BlazeMeter

    Free plan APIExtensionLinux+2

    BlazeMeter combines several testing types with service virtualization and AI-assisted test triage. Its listed free limits and paid plan details help clarify the scale available at each tier.

    7.5 Free plan · paid from $99/mo (annual) Visit site
  4. 4

    Fortio

    Free plan APILinuxMac+3

    Fortio combines load generation, latency reporting, and server utilities in a free open-source project.

    7.5 Open source Visit site
  5. 5

    Gatling

    Free plan APILinuxMac+3

    Choose Gatling if you need load, stress, API, or distributed testing and want code, no-code, or Postman-based test authoring.

    7.4 Free plan · paid from €89/mo (annual) · 14-day trial Visit site
  6. 6

    LoadFocus

    Free plan APIExtensionWeb

    LoadFocus covers load testing alongside page-speed, API, and UI testing, with both JMeter and k6 workflows.

    7.1 Free plan · paid from $19/mo · 7-day trial Visit site
  7. 7

    Locust

    Free plan APILinuxMac+3

    Locust combines Python-authored tests with live reporting, adjustable load, and distributed execution. Its automatic OpenTelemetry instrumentation is currently limited to the requests library.

    7.1 Free plan Visit site
  8. 8

    Loader.io

    Free plan APIWeb

    Loader.io provides configurable load tests and real-time monitoring for web apps and APIs.

    7.0 Free plan · paid from $99.95/mo Visit site
  9. 9

    Vegeta

    Free plan APILinuxMac+2

    Vegeta combines constant-rate HTTP load generation with multiple output formats and HTTP/2 and TLS controls.

    7.0 Open source Visit site
  10. 10

    ApacheBench (ab)

    by Apache Software Foundation
    Free plan
    6.3 Visit site
  11. 11

    k6

    by Grafana Labs
    Free plan
    5.9 Visit site
  12. 12

    WebLOAD

    Free trial APILinuxSelf-hosted+2

    WebLOAD provides script recording, JavaScript customization, analytics, integrations, and multiple deployment choices for performance testing.

    5.9 From $499/mo · 15-day trial Visit site
  13. 13

    Hey

    by rakyll
    Free plan
    5.7 Visit site
  14. 14

    wrk

    by Wg (Gil Tene and contributors)
    Free plan
    5.2 Visit site
  15. 15

    Tricentis NeoLoad

    Paid LinuxMacWeb+1
    4.6 Visit site
  16. 16

    LoadRunner Professional

    Paid
    3.9 Pricing on request Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, free trials and paid pricing before choosing. For code access or modification, examine each product’s licence. Also verify that the tool supports your environment, whether that is an API, Linux, web, self-hosted, Windows or macOS setup.

Questions

Can I use load testing software without paying?

ApacheBench, Apache JMeter, Fortio, Hey, k6 and Locust are available at no cost, while several freemium products include free plans.

Which tools provide trial periods?

Gatling offers a 14-day trial. LoadFocus provides a 7-day trial.

Which load testing tool provides open-source access?

Fortio is identified as open source. k6 includes an Open Source plan.

What does LoadRunner Professional cost?

LoadRunner Professional lists pricing on request.

What operating environments are supported?

The listed environments are API, Linux, web, self-hosted, Windows and macOS. Check a tool's details for the platform you need.

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