Gatling
High-performance load testing with a code-first DSL and superb HTML reports.
What it is
Gatling uses an asynchronous, non-blocking architecture to generate very high load from modest hardware, with tests written as code in Scala, Java, Kotlin, JavaScript or TypeScript. Its generated HTML reports are the best in the open-source category. Gatling Enterprise adds distributed injectors, scheduling and trend analysis.
Best for
Where it is strong
- Very high throughput per load generator thanks to the async architecture.
- Code-first scenarios that review, diff and refactor properly.
- The default HTML report is genuinely good enough to hand to a stakeholder.
Where it falls short
- Historically Scala-first; the Java and JavaScript DSLs are newer and less documented.
- Fewer protocols than JMeter.
- Distributed load without the enterprise product means building your own orchestration.
Pricing
From €89 per month (indicative, Enterprise Cloud entry)
Free tierFree tier: Gatling open source is complete for single-machine load generation.
What drives the bill: Open source is free; Enterprise adds distributed injectors and reporting, billed by virtual-user-hours.
Check current pricing on Gatling Corp’s siteFigures are indicative and were last reviewed August 2026. Vendors change pricing often; confirm before you commit.
Works with
What people who use Gatling say
No reviews of Gatling yet. If you have used it in anger, yours would be the first.
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