The free plan supports simple coding suggestions. If enjoy this, subscribe to a personal plan.
GitHub Copilot
GitHub Copilot is an official extension of Github, that turns natural language prompts into coding suggestions across dozens of languages.
Tabnine
Tabnine Whole-line & full-function code completions, able to learn your coding patterns & style.
Codium
Codium is free until now, fast, and pretty good for simple issues.
This is a simple comparison of them: Codeium vs. GitHub Copilot vs. Tabnine Comparison (sourceforge.net)