TOOL SIGNAL / ACTIVE

nGrinder

Naver

Load Testing Open Source Self-hosted
Official site ↗ Source repo ↗
Pricing model
Free; Apache License 2.0.
First released
2012
Latest release
3.5.9-p1
Last verified
Answer

nGrinder is an open-source enterprise-level performance testing platform that enables users to execute simultaneous script creation, test execution, monitoring, and result report generation. It consists of two main components: a web-based controller for test management and script creation, and agents that function as virtual user generators to create load.

About

nGrinder is an open-source enterprise-level performance testing platform that enables users to execute simultaneous script creation, test execution, monitoring, and result report generation. It consists of two main components: a web-based controller for test management and script creation, and agents that function as virtual user generators to create load.

Best for

  • Load Testing scenarios across typical web and service stacks
  • Teams that prefer open-source licensing and self-hosting options
  • Groups comfortable scripting in Groovy, Jython, Python

Not the best fit when

  • Teams unwilling to operate generators, results storage, and scaling

Architecture and concurrency

nGrinder is commonly operated as self-hosted software with scenario authoring in Groovy, Jython, Python. Concurrency and distribution depend on how you size workers or injectors.

Compare and alternatives

nGrinder alternatives 12 alternatives compared

Features

  • Use Jython or Groovy script to create test scenarios and generate load in the JVM using multiple agents.
  • Web-based interface for project management, monitoring, and result reporting.
  • Supports distributed agent deployment across multiple network regions.
  • Concurrent test execution with efficient agent utilization and dynamic assignment.
  • Built-in script management with integrated Subversion.
  • System and agent monitoring with real-time log access.
  • Agent auto-update feature.
  • Role-based administration including user management and test execution policies.

Latest release

3.5.9-p1 · 2024-06-13

Version 3.5.9 includes fixes for security vulnerabilities, updates to the base JDK version (to JDK 11), and bug fixes related to Maven/Gradle command execution on Windows and script validation in Docker environments.

Pricing

Open-source (Apache License 2.0). No pricing information exists as it is a free, open-source software project.

Specs

Scripting
GroovyJythonPython
Protocols
HTTPHTTPS
Operating systems
WindowsmacOSLinux
Tags
javadistributedweb-uiopen-source
Repo health
★ 2103 · last push 2024-10-10 ARCHIVED REPO

Sources

SHOW SOURCES

LAST VERIFIED · 2026-08-15 · GROUNDED VIA EXA · CURATED BY NAVEENKUMAR NAMACHIVAYAM

Frequently asked

ANSWER-SHAPED
Who is nGrinder for?

nGrinder is best for engineers designing load, stress, and performance tests for web and service systems. It is open source, so teams can self-host and extend it. Vendor: Naver. Deployment model: self-hosted. Free; Apache License 2.0. Confirm details against the official site and a short proof-of-concept in your environment.

How does nGrinder differ from Apache JMeter?

Compared with Apache JMeter, scripting centers on Groovy, Jython, Python rather than Java, Groovy. nGrinder lists protocols HTTP, HTTPS; Apache JMeter lists HTTP, HTTPS, JDBC, JMS, FTP, TCP. Status is active versus active. Use the Test Rig to compare full specs side by side before a proof-of-concept.

What scripting language and concurrency model does nGrinder use?

nGrinder uses Groovy, Jython, Python for scripting or scenario definition. Runtime model: code-first scenarios where virtual users execute scripted behavior under load. OS support: Windows, macOS, Linux. Protocols: HTTP, HTTPS. Match these to how your team already authors tests and which systems you must drive under load.

What is the cloud or enterprise path for nGrinder?

nGrinder is primarily self-hosted; teams typically run generators on their own machines, CI runners, or private cloud. Plan for generator capacity, network access to targets, and result storage yourself. As open source, commercial support or hosted siblings may exist separately. Check the official site. Pricing note: Free; Apache License 2.0.

What are known limitations of nGrinder?

nGrinder limitations to weigh: self-hosted tools require you to provision, scale, and observe load generators yourself. Status: active. Always validate against your target protocols and scale with a proof-of-concept. Confirm details against the official site and a short proof-of-concept in your environment.