Curl Source Explorer showing a function with AI explanation

Making a 30-Year-Old Codebase Approachable With AI

Curl Source Explorer: Learn a 30-Year-Old Codebase Without Getting Lost Curl has been running on virtually every computer on the planet since 1998. It’s one of the most-used pieces of software ever written — and almost nobody who uses it daily has ever read a line of its source code. That’s partly because diving into a mature C codebase is intimidating. There are no onboarding docs for the internals, no guided tour, no one to ask why a particular function was written the way it was. You’re either grepping through 170,000 lines alone, or you’re not reading it at all. ...

March 19, 2026 · 3 min · Mr.Dee