Locust

k6

grafana/k6

Popular

Grafana's developer-centric load testing tool with JS/TS scripts, thresholds and browser testing.

JMeter

apache/jmeter

Popular

Veteran Apache GUI and CLI load tester for HTTP, JDBC, JMS and more; still entrenched in enterprise QA.

Gatling

gatling/gatling

High-performance load testing with code-based scenarios in Java, Kotlin, Scala or JS and rich HTML reports.

Artillery

artilleryio/artillery

Node.js load testing toolkit with YAML scenarios, Playwright browser load tests and serverless runs on AWS.

Vegeta

tsenart/vegeta

Constant-rate HTTP load testing CLI and Go library, great for precise throughput tests.

oha

hatoo/oha

Rising

HTTP load generator with a real-time terminal UI, a modern take on ab and hey.

autocannon

mcollina/autocannon

Fast HTTP/1.1 benchmarking tool written in Node.js, usable as CLI or programmatically.

wrk

wg/wrk

Legacy

Classic multithreaded HTTP benchmarking tool with Lua scripting; inactive for years but still widely cited.