GitHub Copilot

Coding and Development - Pricing: freemium - Editor rating: 4.5/5 - https://github.com/features/copilot

The most popular AI coding assistant - autocompletes code, explains it, and chats about your codebase inside the editor.

GitHub Copilot lives in your code editor and suggests whole lines and functions as you type, explains unfamiliar code, writes tests, and answers questions about your project in a chat panel. Studies and developer surveys consistently show meaningful speed gains, especially for boilerplate and unfamiliar territory. Free for students and open-source maintainers, subscription for everyone else, with a limited free tier.