Protobuf-dt is a new Eclipse plug-in for editing protocol buffer descriptor files. It provides all the features you would expect from an IDE editor, such as syntax highlighting, an outline view, content assist and hyperlinking.
Protobuf-dt also provides protocol buffer-specific features like automatic generation of numeric tags, Javadoc-like documentation and integration with protoc.
This plug-in has been heavily tested by Google employees in many different projects through seven internal releases. For more information, please visit our project page, join the mailing list and download the code.
To install the plugin, please follow these instructions.
By Alex Ruiz, Google Engineering Tools