oracle/opengrok

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

Java

4,986

4,241 commits

updated Oct 8, 2026

See the code

README

Copyright (c) 2006, 2025 Oracle and/or its affiliates. All rights reserved.

OpenGrok - a wicked fast source browser

GitHub actions build Coverage status SonarQube status License

1. Introduction

OpenGrok is a fast and usable source code search and cross reference engine, written in Java. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories of many source code management systems.

Official page of the project is on: https://oracle.github.io/opengrok/

2. Installation

See https://github.com/oracle/opengrok/wiki/How-to-setup-OpenGrok

2. 1. Updating

OpenGrok uses semantic versioning and the version components further indicate more details about updating to newer version. The version scheme is major.minor.micro and change in any component is interpreted as:

  • major - major backwards incompatible update, will require full reindex as well as configuration changes
  • minor - full clean reindex of your repositories is needed (e. g. index format has changed)
  • micro - redeploy web application

Generally it is possible to go backward only within the micro version.

3. Information for developers

See https://github.com/oracle/opengrok/wiki/Developer-intro and https://github.com/oracle/opengrok/wiki/Developers

4. Authors

The project has been originally conceived in Sun Microsystems by Chandan B.N.

For full list of contributors see https://github.com/oracle/opengrok/graphs/contributors

5. Contact us

Use the GitHub Discussions.

6. Run as container

You can run OpenGrok as a Docker container as described here.

Contributing

This project welcomes contributions from the community. Before submitting a pull request, please review our contribution guide

Security

Please consult the security guide for our responsible security vulnerability disclosure process

License

Copyright (c) 2006, 2025 Oracle and/or its affiliates.

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oracle/opengrok

OpenGrok is a fast and usable source code search and cross reference engine, written in Java

Java

4,986

4,241 commits

updated Oct 8, 2026

See the code

README

Copyright (c) 2006, 2025 Oracle and/or its affiliates. All rights reserved.

OpenGrok - a wicked fast source browser

GitHub actions build Coverage status SonarQube status License

1. Introduction

OpenGrok is a fast and usable source code search and cross reference engine, written in Java. It helps you search, cross-reference and navigate your source tree. It can understand various program file formats and version control histories of many source code management systems.

Official page of the project is on: https://oracle.github.io/opengrok/

2. Installation

See https://github.com/oracle/opengrok/wiki/How-to-setup-OpenGrok

2. 1. Updating

OpenGrok uses semantic versioning and the version components further indicate more details about updating to newer version. The version scheme is major.minor.micro and change in any component is interpreted as:

  • major - major backwards incompatible update, will require full reindex as well as configuration changes
  • minor - full clean reindex of your repositories is needed (e. g. index format has changed)
  • micro - redeploy web application

Generally it is possible to go backward only within the micro version.

3. Information for developers

See https://github.com/oracle/opengrok/wiki/Developer-intro and https://github.com/oracle/opengrok/wiki/Developers

4. Authors

The project has been originally conceived in Sun Microsystems by Chandan B.N.

For full list of contributors see https://github.com/oracle/opengrok/graphs/contributors

5. Contact us

Use the GitHub Discussions.

6. Run as container

You can run OpenGrok as a Docker container as described here.

Contributing

This project welcomes contributions from the community. Before submitting a pull request, please review our contribution guide

Security

Please consult the security guide for our responsible security vulnerability disclosure process

License

Copyright (c) 2006, 2025 Oracle and/or its affiliates.

Powered by

IntelliJ IDEA logo.

code
engine
java
maven
opengrok
search
source

Project health

Overall

5.1/10

Maintained

10/10

Code review

1/10
OpenSSF Scorecard

Significant stargazers

(top 24 of 41)

John Bampton

445 followers · starred Apr 2025

tesuji

50 followers · starred Oct 2018

fsouza

0 followers · starred Jul 2023

Ng Zhi An

192 followers · starred Jul 2016