: This is the official Google tool for exploring AOSP .
OpenGrok (used by OpenJDK and FreeBSD) is the most powerful free xref engine. It is a Java-based tool that indexes source code and provides a web interface for cross-referencing. xref aosp free
: These tools understand the language syntax. A search for a "Definition" won't just show you every time a word is mentioned in a comment; it takes you to the actual code declaration. Linkability : This is the official Google tool for exploring AOSP
He dove into the attic of the internet. Not the web—the ghost nets . Old Usenet archives. Discarded SourceForge projects. A forgotten Git server in a university basement in Zurich that still echoed a 2008 checkout. : These tools understand the language syntax
: Known for an easy-to-use interface that allows you to specify specific branches (up to Android 15.0 as of late 2024).