Visual Studio Code. Web Core Fonts.
"ever" is a strong word.
Microsoft fought the Linux desktop at every step and they are still fighting it, conscious that Office exclusivity is a key tool in keeping the enterprise and public-sector markets as their main cash cows. They opened to Linux-running developers just enough to promote their cloud strategy, but they will never do anything that could potentially endanger their desktop monopoly.
VSCode is indeed part of their cloud strategy. I do not for a moment claim that they did anything benevolent for linux desktop experience -- nor do I expect them to do anything especially for Linux (on the contrary, I expect them to try to kill it).
And still, all I objected was to your use of the word "ever", since VSCode is actually packaged for the linux desktop, and is, IMHO, at the moment the best IDE on linux for quite a few languages.
I wonder why they did that? Oh yeah, it's exactly like Microsoft not "giving" anything to the Linux desktop, ever.