GitHub Copilot
Overview
An AI helper built into code editors that suggests the next lines of code as you type and can answer questions about a codebase.
General use
Developers use it to autocomplete repetitive code, write tests, and get unstuck without leaving the editor.
Insight
Solid at finishing the line or block you are already writing, which is still where most day-to-day value sits. It is weaker than newer tools at bigger changes across many files, and it does not hold a mental model of your project the way chat-first tools do. Because it lives inside your existing editor, the setup cost is close to zero. Good as a quiet autocomplete, not as a pair programmer.