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Best Load Testing Software in 2026

Load testing software helps teams put planned demand against an application or service. This list is for people comparing tools before choosing one.

  1. 01 LoadFocus

    LoadFocus suits engineering teams, developers, web agencies, product owners and DevOps engineers who need load, page-speed, API or UI testing.

    From $15.80/mo Free plan Web · API · Browser extension
    8.7 Visit Specs
  2. 02 Artillery

    Artillery suits application developers, test and QA engineers, and operations or SRE teams responsible for production backend systems.

    From $199/mo Free trial Web · Windows · macOS · Linux
    8.5 Visit Specs
  3. 03 Apache JMeter

    JMeter suits users who need free load or stress testing across supported protocols and can work with a Java-based tool.

    Free plan Windows · macOS · Linux · Self-hosted
    8.4 Visit Specs
  4. 04 BlazeMeter

    BlazeMeter may suit teams coordinating performance, functional, and API testing with CI/CD systems or simulating dependent services.

    From $8.25/mo Free trial Web · Linux · API · Self-hosted
    8.3 Visit Specs
  5. 05 Gatling

    Gatling suits teams that want to author load tests in code, through a no-code generator or by importing Postman tests.

    From €89/mo Free trial Web · Windows · macOS · Linux
    8.3 Visit Specs
  6. 06 Fortio

    Fortio suits developers and operators who need self-hosted HTTP or gRPC load and API testing.

    Free plan Web · Windows · macOS · Linux
    8.1 Visit Specs
  7. 07 Loader.io
    From $99.95/mo Free plan Web · API
    7.9 Visit Specs
  8. 08 Vegeta

    Vegeta suits developers and teams needing constant-rate HTTP or API load tests, including distributed runs.

    Free plan Windows · macOS · Linux · API
    7.9 Visit Specs
  9. 09 WebLOAD
    From $499/mo Free trial Web · Windows · Linux · API
    7.7 Visit Specs
  10. 10 Locust

    Locust suits developers who can author test scenarios in Python and need to observe HTTP or other protocol performance.

    Free plan Web · Windows · macOS · Linux
    7.6 Visit Specs
  11. 11 ApacheBench (ab)Apache Software Foundation
    Free plan
    6.8 Visit Specs
  12. 12 k6Grafana Labs
    Free plan
    6.4 Visit Specs
  13. 13 Tricentis NeoLoad
    Web · Windows · macOS · Linux
    5.8 Visit Specs
  14. 14 Heyrakyll
    5.5 Visit Specs
  15. 15 LoadRunner Professional
    5.3 Visit Specs
  16. 16 wrkWg (Gil Tene and contributors)
    5.0 Visit Specs
How this list is ordered. Specifiction scores each tool on how fully its maker documents it, whether its prices are published, where the research puts it, the platforms it runs on and whether it can be tried for free (how we rank). Makers can also buy a numbered place (how Specifiction is paid for).

Compare the pricing model, free access and trial terms. Check that the published platform support matches your needs, such as API, Linux, web, self-hosted, Windows or macOS.

Compare LoadFocus and Artillery Get a place on this list

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