CodeLens style in-context information in IntelliJ IDEA

Now there is JetBrains plugin named GitToolBox.

It has some similar functionality, including the current line "blame annotation" at the end of the line with detailed commit information:

(22-Aug-2022 updated) The hints from git blame are also available in the latest IntelliJ IDEA.

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(For CodeLens function references feature) Now it's a built-in feature after version IntelliJ IDEA 2020.1.

You can enable it from:

Ref: https://blog.jetbrains.com/idea/2020/03/intellij-idea-2020-1-beta2/

This feature is available for Rider, but not for IntelliJ yet. In Rider it's called Code Vision

You can vote for this feature request in IntelliJ IDEA here

There is no such plugin (yet).

You can of course right click the left gutter (gray editor to the left of the editor) and select "Annotate". That gives you at least the last edit per line.

More similar to your desired feature (but unfortunately not inline): Select some text (e.g. a method), then right-click Git -> Show History for Selection.