Load Testing
Best Load Testing Tools 2025
Test application performance under load.
1
k6
Developer-centric load testing.
4.7(1,800)
Free
JavaScriptCLICI/CDCloudMetricsExtensions
Developer friendly
JavaScript
Great CLI
Learning curve
Cloud for scale
Best for: DevelopersVisit Site
2
Locust
Python load testing.
4.5(1,200)
Free
PythonDistributedWeb UIOpen sourceScalableExtensible
Python scripting
Open source
Scalable
Python required
Self-hosted
Best for: Python teamsVisit Site
3
Gatling
High-performance load testing.
4.4(920)
Free
Scala/JavaReportsCI/CDEnterpriseCloudRecorder
High performance
Great reports
Enterprise
Scala learning
Complex
Best for: Enterprise load testingVisit Site
4
BlazeMeter
Cloud load testing.
4.3(580)
Free
CloudJMeter compatibleReportsCI/CDAPIMock services
JMeter compatible
Cloud scale
Reports
Expensive
Complex
Best for: JMeter usersVisit Site