CodeChat

Diving into an unfamiliar codebase — especially a large, complex one like Twitter's Recommendation Algorithm — can feel like trying to read a foreign language. CodeChat changes that by letting you have a real conversation with GitHub source code, asking questions in plain English and getting clear, contextual answers about how the code works.

Instead of spending hours tracing function calls and reading documentation, you can just ask CodeChat to explain a module, walk you through a function, or clarify why something is implemented a certain way. It's the fastest way to get up to speed on any codebase you didn't write yourself.