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Grafana k6BlazeMeter
Free

The k6 tool itself is free and open source.

 Paid

Commercial service with published pricing plans.

Command line Web
  • Test scenarios written in plain JavaScript
  • Single command-line tool, also usable in Docker
  • Runs JMeter load tests at scale in the cloud
  • Combines load, API and functional testing
  • Requires writing scripts; no graphical test builder in the tool itself
  • Aimed at developers rather than casual site owners
  • Aimed at businesses rather than individuals
  • Hosted service only
Downloadable app Hosted service
Open source Closed source
License not stated License not stated
No account needed Account needed
Works offline Needs internet

Checked September 23, 2026

Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.