Some notes:

- Yes it’s cross platform. However, that does not include Winforms or WPF. Apparently the “multi-platform” in MAUI is “Android, iOS, macOS, and Windows” which means if you don’t care about Linux, you have a potential cross-platform UI option. However, the decision to not include Linux, while not really a terrible act in and of itself, does hint at a bit of the limits of Microsoft’s “friendliness” towards open source.

- Dotnet Core makes async easy, and that’s great. However, when playing around with it, I did notice that it’s the kind of “async” where you need to manually yield if you are not heavily IO bound. It’s not quite idiot proof and you can cause a lot of trouble by holding it wrong. This is not any different from JS or Rust, but it’s worth noting.

- Big eyeroll at the knock on Go regarding generics. I’ve written a lot of Go code and while I think adding generics will be helpful, I can think of exactly one place in existing code I definitely want to put generics after 1.18. It’s one thing to expound on C# language design, which I agree has its merits, but getting into tit for tat comparisons with other languages that have vastly different design goals like Rust and Go is losing enough nuance to be basically meaningless, and then using that to elevate your opinion is just poor form.

- Friendliness towards open source is still sketchy. They did indeed do most of the important things, including, well, move almost everything into the open. Well, almost.

But not quite. Not the debugger for example. See this long-standing issue for some backstory: https://github.com/dotnet/core/issues/505

(There was also some issue with .NET governance that pissed off the community, but I’m not in-the-know enough to grok it, so I’ll just not attempt to poorly explain it.)

Microsoft seems to have a tendency to do this. They give you almost everything, but they hold back some important components. It’s the same with VSCode; try using VSCode OSS. No remoting, no liveshare, no official extension repo. Mozilla doesn’t lock off access to AMO from Firefox forks. Chrome doesn’t lock block access to Webstore from Chromium or its forks. Open source Firefox can log into Sync. Open source Chromium can log into Sync, too. Open source Edge… well, no. Edge is closed source.

Microsoft is indeed not the company that it was under Ballmer. That’s not all sunshine and rainbows, though.

For what it’s worth, I’m not saying that Microsoft is obligated to do anything, or that we’d be better if they never changed. Even vscode-oss and monaco editor are quite nice to have. That said, Microsoft bills themselves as being allies of open source when I feel like this is a pretty dubious position. They’re clearly operating very strategically here; there is little guise of actual goodwill.

At risk of sounding like a nut job, I suspect MAUI not supporting Linux is perfect to go alongside WSL2. From my perspective, Microsoft doesn’t seem to just want to mutually benefit from open source in the traditional way, they also seem interested in trying to shift the community in a certain direction where Windows and Microsoft binary blobs are an important part of open source developers toolkits. A slowly increasing number of killer features will rely on closed source blobs, allowing Microsoft to exert substantial control over the ecosystem, while still maintaining the ability to say “why are you so afraid? VS Code is open source*!”

I still use VS Code despite my concerns, so I’ll leave it up to you to decide what that says about me.