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Apache JMeterSiege
Free

Free and open source from the Apache Software Foundation.

 Free

Free and open source.

Windows, macOS, Linux, Command line macOS, Linux, Command line
  • Tests many protocols, including HTTP, REST, SOAP, FTP and databases
  • Distributed testing across several machines
  • Tests many URLs at once from a list
  • Configurable number of simulated users
  • Requires a Java runtime
  • Test plans take time to learn for newcomers
  • Command line only, with no graphical reports
  • Scripting options are simpler than in newer load testers
Downloadable app Downloadable app
Open source Open source
License: Apache-2.0 License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked September 23, 2026

Checked September 24, 2026

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