Arbed gives you a few specialized functions for inspecting and editing REALbasic projects.

Many of them are free for your use, such as:
1. View differences between two projects, much clearer than with a plain text editor using the VCP or XML project formats.
2. Consolidate all external items into the project or into a single folder for easier re-distribution of your large projects.
3. Find text in multiple projects in a single step, selecting the folder(s) containing all the project files to be searched.
4. However, some operations require a license purchase before they can be used:

Using the File menu's Save operation, which applies when?
you've used the "Apply" buttons to merge differences between two compared projects, used the "Make Dynamic" function of the "Prepare Project for Localization" operation or deleted or modified items in an opened project. Saving the HTML output from source code to disk.

The license of this software is Free Trial Software, the price is $59.00, you can free download and get a free trial.