People only seem to have heard about GitHub Copilot. But Microsoft has a similar solution (that is not as... invasive) that was first released in preview in 2018. It's called IntelliCode, available for multiple languages both for Visual Studio Code[1] and regular Visual Studio[2] (but not enabled by default last time I checked -- which was a while ago, granted).

JetBrains has their own experimental thing that is not enabled per default.

And there's also Codota and Tabnine.

Copilot is actually fairly late to the party here.

[1]: https://marketplace.visualstudio.com/items?itemName=VisualSt...

[2]: https://github.com/MicrosoftDocs/intellicode/blob/master/doc...