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Locust

Locust tests system performance with Python.

Free tierPrice verified 2026-09-30Visit site ↗
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Our verdict

Who it's for

Load test with Python code, scale easily

Who should look elsewhere

Python knowledge needed

Pros

  • +Python load testing
  • +Easy to write tests
  • +Good UI
  • +Open source
  • +Distributed testing

Cons

  • −Python knowledge needed
  • −Resource intensive
  • −Limited protocol support
  • −Reporting basic
  • −Alternatives exist

Key features

  • ✓Load testing
  • ✓Python scripts
  • ✓Distributed
  • ✓Real-time stats
  • ✓Web UI
  • ✓Open source

Pricing

PlanPriceBillingNotes
Locust (Open Source)$0monthUnlimited VUs; Python scripting; Distributed testing
Locust Cloud—monthHosted infrastructure; Detailed reporting; Easy scaling

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