opengrok - OpenGrok is a fast and usable source code search and cross reference engine, written in Java
Copyright (c) 2006, 2017 Oracle and/or its affiliates. All rights reserved. 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.