Code Quality Rank: L2
Programming language: Java
License: Apache License 2.0
Tags: Testing    
Latest version: v5.3

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An Open Source Java application designed to measure performance and load test applications.

By The Apache Software Foundation

Build Status codecov License Stack Overflow Maven Central Javadocs Twitter

What Is It?

Apache JMeter can measure performance and load test static and dynamic web applications.

It can be used to simulate a heavy load on a server, group of servers, network or object to test its strength or to analyze overall performance under different load types.

JMeter screen


Complete portability and 100% Java.

Multi-threading allows concurrent sampling by many threads and simultaneous sampling of different functions by separate thread groups.


Ability to load and performance test many applications/server/protocol types:

  • Web - HTTP, HTTPS (Java, NodeJS, PHP, ASP.NET,...)
  • SOAP / REST Webservices
  • FTP
  • Database via JDBC
  • LDAP
  • Message-oriented Middleware (MOM) via JMS
  • Mail - SMTP(S), POP3(S) and IMAP(S)
  • Native commands or shell scripts
  • TCP
  • Java Objects


Fully featured Test IDE that allows fast Test Plan recording (from Browsers or native applications), building and debugging.

Command Line

Command-line mode (Non GUI / headless mode) to load test from any Java compatible OS (Linux, Windows, Mac OSX, ...)


A complete and ready to present dynamic HTML report

Dashboard screenshot

Live reporting into 3rd party databases like InfluxDB or Graphite

Live report


Easy correlation through ability to extract data from most popular response formats, HTML, JSON, XML or any textual format

Highly Extensible Core

  • Pluggable Samplers allow unlimited testing capabilities.
  • Scriptable Samplers (JSR223-compatible languages like Groovy).
  • Several load statistics can be chosen with pluggable tiers.
  • Data analysis and visualization plugins allow great extensibility and personalization.
  • Functions can be used to provide dynamic input to a test or provide data manipulation.
  • Easy Continuous Integration via 3rd party Open Source libraries for Maven, Gradle and Jenkins.

The Latest Version

Details of the latest version can be found on the JMeter Apache Project web site


The following requirements exist for running Apache JMeter:

  • Java Interpreter:

A fully compliant Java 8 Runtime Environment is required for Apache JMeter to execute. A JDK with keytool utility is better suited for Recording HTTPS websites.

  • Optional jars:

Some jars are not included with JMeter. If required, these should be downloaded and placed in the lib directory

  • JDBC - available from the database supplier
  • JMS - available from the JMS provider
  • Bouncy Castle - only needed for SMIME Assertion

    • Java Compiler (OPTIONAL):

A Java compiler is not needed since the distribution includes a precompiled Java binary archive.

Note that a compiler is required to build plugins for Apache JMeter.

Installation Instructions

Note that spaces in directory names can cause problems.

  • Release builds

Unpack the binary archive into a suitable directory structure.

Running JMeter

  1. Change to the bin directory
  2. Run the jmeter (Un*x) or jmeter.bat (Windows) file.


For Windows, there are also some other scripts which you can drag-and-drop a JMX file onto:

  • jmeter-n.cmd - runs the file as a non-GUI test
  • jmeter-n-r.cmd - runs the file as a non-GUI remote (client-server) test
  • jmeter-t.cmd - loads the file ready to run it as a GUI test


The documentation available as of the date of this release is also included, in HTML format, in the [printable_docs](printable_docs) directory, and it may be browsed starting from the file called [index.html](printable_docs/index.html).

Reporting a bug/enhancement

See Issue Tracking.

Build instructions

Release builds

Unpack the source archive into a suitable directory structure. Most of the 3rd party library files can be extracted from the binary archive by unpacking it into the same directory structure.

Any optional jars (see above) should be placed in lib/opt and/or lib.

Jars in lib/opt will be used for building JMeter and running the unit tests, but won't be used at run-time.

This is useful for testing what happens if the optional jars are not downloaded by other JMeter users.

If you are behind a proxy, you can set a few build properties in ~/.gradle/gradle.properties for Gradle to use the proxy:


Test builds

JMeter is built using Gradle.

The following command builds and tests JMeter:

./gradlew build

If the system does not have a GUI display then:

./gradlew build -Djava.awt.headless=true

The output artifacts (jars, reports) are placed in the build folder. For instance, binary artifacts can be found under src/dist/build/distributions.

The following command would compile the application and enable you to run jmeter from the bin directory.

Note that it completely refreshes lib/ contents, so it would remove custom plugins should you have them installed.

./gradlew createDist

Alternatively, you could get Gradle to start the GUI:

./gradlew runGui

Developer Information

Building and contributing is explained in details at building JMeter and [CONTRIBUTING.md](CONTRIBUTING.md). More information on the tasks available for building JMeter with Gradle is available in [gradle.md](gradle.md).

The code can be obtained from:

Licensing and Legal Information

For legal and licensing information, please see the following files:


Cryptographic Software Notice

This distribution may include software that has been designed for use with cryptographic software. The country in which you currently reside may have restrictions on the import, possession, use, and/or re-export to another country, of encryption software. BEFORE using any encryption software, please check your country's laws, regulations and policies concerning the import, possession, or use, and re-export of encryption software, to see if this is permitted. See https://www.wassenaar.org/ for more information.

The U.S. Government Department of Commerce, Bureau of Industry and Security (BIS), has classified this software as Export Commodity Control Number (ECCN) 5D002.C.1, which includes information security software using or performing cryptographic functions with asymmetric algorithms. The form and manner of this Apache Software Foundation distribution makes it eligible for export under the License Exception ENC Technology Software Unrestricted (TSU) exception (see the BIS Export Administration Regulations, Section 740.13) for both object code and source code.

The following provides more details on the included software that may be subject to export controls on cryptographic software:

Apache JMeter interfaces with the Java Secure Socket Extension (JSSE) API to provide

  • HTTPS support

Apache JMeter interfaces (via Apache HttpClient4) with the Java Cryptography Extension (JCE) API to provide

  • NTLM authentication

Apache JMeter does not include any implementation of JSSE or JCE.


Thank you for using Apache JMeter.

Third party notices

  • Notice for mxparser:

This product includes software developed by the Indiana University Extreme! Lab. For further information please visit http://www.extreme.indiana.edu/

*Note that all licence references and agreements mentioned in the Apache JMeter README section above are relevant to that project's source code only.