Agree, Beyond Compare is a great diff tool. We have interfaced it to Deltanji source control - so it goes direct to code in InterSystems namespaces, rather than exporting the code into files and then diffing the files.  

The solo edition (free to use) is available from our website if you're using Studio. Or you can download it as a VS Code extension by installing Serenji. 

If you've tried using gj :: locate and found it useful, please give us a vote in the current developer community competition here