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We are ACTIVE.


nGrinder is a platform for stress tests that enables you to execute script creation, test execution, monitoring, and result report generator simultaneously. The open-source nGrinder offers easy ways to conduct stress tests by eliminating inconveniences and providing integrated environments.

Want to to know what's changed from the orginial grinder platform?

To get to know what's different from previous ngrinder 2.0?

To get started,

You can find out what nGrinder looks like with screenshot.

Do you really want to use nGrinder? Check out our demo instance.

nGrinder consists of two major components.

nGrinder controller

  • a web application that enables the performance tester to create a test script and configure a test run

nGrinder agent

  • a virtual user generator that creates loads.


  • Use Jython script to create test scenario and generate stress in JVM using multiple agents.
  • Extend tests with custom libaries(jar, py). It's unlimited practically.
  • Provide web-based interface for project management, monitoring, result management and report management.
  • Run multiple tests concurrently. Assign the preinstalled multiple agents to maximize each agent's utilization.
  • Deploy agents on multiple network regions. Execute tests on various network locations
  • Embed Subversion to manage scripts.
  • Allow to monitor the state of agents generating stress and target machines receiving stress
  • Proven solution which is used to test huge systems having more than 100 million users in NHN.


You can download the latest nGrinder in the following link.


You can find the installation guide at the following link.

You can find the user guide at the following location link.

Road Map

The explicit roadmap of nGrinder enables it to be a most effective and efficient performance test tool. Check out our roadmap :


nGrinder welcomes any contributions from users. Please make all pull requests against master branches.

  • Clone the REPO : 'git clone git://'

You can find general developer documents at the following link.


For transparency and insight into our release cycle, and to strive to maintain backward compatibility, Bootstrap will be maintained under the Semantic Versioning guidelines to the greatest extent possible.

Releases will be numbered in the following format:


Release will be constructed based on the following guidelines:

  • Breaking backward compatibility bumps the major (and resets the minor and patch)
  • New additions without breaking backward compatibility bump the minor (and reset the patch)
  • Bug fixes and misc. changes bump the patch

Q/A and Bug tracker

Found a bug? Got an idea for an enhancement? Please create an issue here on GitHub so you can notify us!

Our official bug tracker is at the following link. Check here to monitor our development status.

You can join our forum as well

Copyright and license

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 See the License for the specific language governing permissions and
 limitations under the License. 

nGrinder includes the following software and libraries as follows. See the LICENCE folder for the license and copyright details for each.


enterprise level performance testing solution







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