Hi @Michelsg. The idea of maintaining a comprehensive public list of Arduino IDE 2.x-specific extensions is excellent.
Since you are the one who had the idea of maintaining the list in a repository, I think it is most appropriate for you to create the list under your GitHub account. I think it would be a valuable resource to the community, since feedback received during the time before the addition of the extension framework to Arduino IDE and the creation of the extensions that these extensions are heavily depended upon.
You might argue that it would be better for the repository to be under Arduino's GitHub account, but, as would be the case with any company of its size accomplishing this would require navigating through some tedious and slow bureaucratic procedures; whereas creating the repository and the list in your own GitHub account could be completed in a matter of minutes.
As for the list content, I have an important addition to contribute:
There is another interesting looking project here:
unfortunately it seems it never got past the initial stage of the development, so I don't think it qualifies for inclusion in the list now, but worth checking on from time to time in case development ever resumes.
An important thing to note is that there are two classes of Arduino IDE 2.x-compatible extensions:
Standard VS Code extensions such as "WakaTime", which are generally compatible with Arduino IDE 2.x but don't depend on APIs specific to Arduino IDE 2.x.
It is important to mention the availability of the latter class of extension, but it doesn't make sense to include them in the list because the ever increasing thousands of this class of extension are already very well tracked by the VS Code Marketplace website:
@ptillisch Repository created. Thanks for the suggestion.
Contributions to this list are welcome. If you find an extension compatible with Arduino IDE 2.x, please open an issue with the extension information. Our goal is to keep this list dynamic and always updated to better serve the Arduino community.