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OpenGrok Logo.png
Developer(s)Sun Microsystems/Oracle Corporation
Stable release
1.5.11[1] / 8 December 2020; 38 days ago (8 December 2020)
Repository Edit this at Wikidata
Written inJava
Operating systemCross-platform
TypeIndexer and cross-referencer with Revision control
LicenseCDDL Edit this on Wikidata

OpenGrok is a source code search and cross reference engine. It helps programmers to search, cross-reference and navigate source code trees to aid code comprehension.

It can understand various program file formats and version control histories like Monotone, SCCS, RCS, CVS, Subversion, Mercurial, Git, Clearcase, Perforce and Bazaar.[2]

The name comes from the term grok, a jargon term used in computing to mean "profoundly understand". The term grok originated in a science fiction novel by Robert A. Heinlein called Stranger in a Strange Land.

OpenGrok is being developed mainly by community with the help of a few engineers from Oracle Corporation (former Sun Microsystems). OpenGrok is released under the terms of the Common Development and Distribution License (CDDL).


OpenGrok's supports:

  • Full text Search
  • Definition Search
  • Identifier Search
  • Path search
  • History Search
  • Shows matching lines
  • Hierarchical Search
  • query syntax like AND, OR, field:
  • Incremental update
  • Syntax highlighting cross references (Xref)
  • Quick navigation inside the file
  • Interface for SCM
  • Usable URLs
  • Individual file download
  • Changes at directory level
  • Multi language support
  • Suggester
  • RESTful API

See also[edit]


  1. ^ "Release 1.5.11". 8 December 2020. Retrieved 15 December 2020.
  2. ^

External links[edit]