I was frustrated with ChatGPT's inability to answer questions of popular-but-not-that-popular open-source projects. So I helped build a ChatGPT-like tool that can answer questions about any open-source project, and you can add your own (public) GitHub repositories to it. The tool is meant to be used by sales engineers, but can be used by anyone.

Check it out here: https://app.commonbase.ai/

It has been a huge help for me when working with certain open-source libraries.